Audi 100 5cyl cold start problem
#1
Guest
Posts: n/a
Audi 100 5cyl cold start problem
Got a major problem here kindof i think. Got a 1991 Audi 100 with a 5
cylinder 2.3 litre fuel injected engine.
you can crank it for ages and it will fire once or twice or sometimes
not fire at all and just keep cranking. This only happens when the
engine (water) is cold. If I spray ether into the intake manifold it
fires continually until I stop spraying but still will not start. I
have removed two of the fuel lines going to the injectors and there is
no fuel pumping up them but there is on the cold start fuel line. Im
not sure if thats normal or not. but if i push up the lever thingy
behind the air filter then fuel pumps very slowly up all the injector
fuel lines. help help help!!!!
cylinder 2.3 litre fuel injected engine.
you can crank it for ages and it will fire once or twice or sometimes
not fire at all and just keep cranking. This only happens when the
engine (water) is cold. If I spray ether into the intake manifold it
fires continually until I stop spraying but still will not start. I
have removed two of the fuel lines going to the injectors and there is
no fuel pumping up them but there is on the cold start fuel line. Im
not sure if thats normal or not. but if i push up the lever thingy
behind the air filter then fuel pumps very slowly up all the injector
fuel lines. help help help!!!!
#2
Guest
Posts: n/a
Re: Audi 100 5cyl cold start problem
My initial idea is to say the fuel injection relay might not be working the
contacts wear out regularly (100k) and often don't give enough power to the
pump, if it is working full on you should hear the pump kick in when you
turn the ignition on for a couple of seconds before you start it. I had a
similar problem on 100 CD similar engine set up 2226cc one. The relays are
about £20 from german and swedish if I remember rightly, however it is
possible to check this by actually bypassing this relay (not adviseable
normally but just for test purposes, I ran my car on a wired switch for
about two weeks until I managed to get a new one) as it's a safety feature
to kill the pump once the engine is not "firing" rev check. You can use a
suitable thick bit of wire between the sockets for the terminals once you
work out after taking out the relay which ones are required to hard wire
together. With the ignition on only you will hear the pump in the tank
working. If it fires with this you need a new relay. IS the spray from the
cold start very strong? The cold start is on a relay that bypasses the fuel
distibutor if I'm right and will drain any pressure in it, or the fuel valve
in the regulator is sticking. I assume you have not played with the mixture
setting or dropped anything into the plate that regulates the fuel air
mixture etc.
Give me a mail back if that doesn't help.
PAul
"sealdogfish" <sealdogfish@gmail.com> wrote in message
news:1138833954.981435.252450@g44g2000cwa.googlegr oups.com...
> Got a major problem here kindof i think. Got a 1991 Audi 100 with a 5
> cylinder 2.3 litre fuel injected engine.
> you can crank it for ages and it will fire once or twice or sometimes
> not fire at all and just keep cranking. This only happens when the
> engine (water) is cold. If I spray ether into the intake manifold it
> fires continually until I stop spraying but still will not start. I
> have removed two of the fuel lines going to the injectors and there is
> no fuel pumping up them but there is on the cold start fuel line. Im
> not sure if thats normal or not. but if i push up the lever thingy
> behind the air filter then fuel pumps very slowly up all the injector
> fuel lines. help help help!!!!
>
contacts wear out regularly (100k) and often don't give enough power to the
pump, if it is working full on you should hear the pump kick in when you
turn the ignition on for a couple of seconds before you start it. I had a
similar problem on 100 CD similar engine set up 2226cc one. The relays are
about £20 from german and swedish if I remember rightly, however it is
possible to check this by actually bypassing this relay (not adviseable
normally but just for test purposes, I ran my car on a wired switch for
about two weeks until I managed to get a new one) as it's a safety feature
to kill the pump once the engine is not "firing" rev check. You can use a
suitable thick bit of wire between the sockets for the terminals once you
work out after taking out the relay which ones are required to hard wire
together. With the ignition on only you will hear the pump in the tank
working. If it fires with this you need a new relay. IS the spray from the
cold start very strong? The cold start is on a relay that bypasses the fuel
distibutor if I'm right and will drain any pressure in it, or the fuel valve
in the regulator is sticking. I assume you have not played with the mixture
setting or dropped anything into the plate that regulates the fuel air
mixture etc.
Give me a mail back if that doesn't help.
PAul
"sealdogfish" <sealdogfish@gmail.com> wrote in message
news:1138833954.981435.252450@g44g2000cwa.googlegr oups.com...
> Got a major problem here kindof i think. Got a 1991 Audi 100 with a 5
> cylinder 2.3 litre fuel injected engine.
> you can crank it for ages and it will fire once or twice or sometimes
> not fire at all and just keep cranking. This only happens when the
> engine (water) is cold. If I spray ether into the intake manifold it
> fires continually until I stop spraying but still will not start. I
> have removed two of the fuel lines going to the injectors and there is
> no fuel pumping up them but there is on the cold start fuel line. Im
> not sure if thats normal or not. but if i push up the lever thingy
> behind the air filter then fuel pumps very slowly up all the injector
> fuel lines. help help help!!!!
>
#3
Guest
Posts: n/a
Re: Audi 100 5cyl cold start problem
My initial idea is to say the fuel injection relay might not be working the
contacts wear out regularly (100k) and often don't give enough power to the
pump, if it is working full on you should hear the pump kick in when you
turn the ignition on for a couple of seconds before you start it. I had a
similar problem on 100 CD similar engine set up 2226cc one. The relays are
about £20 from german and swedish if I remember rightly, however it is
possible to check this by actually bypassing this relay (not adviseable
normally but just for test purposes, I ran my car on a wired switch for
about two weeks until I managed to get a new one) as it's a safety feature
to kill the pump once the engine is not "firing" rev check. You can use a
suitable thick bit of wire between the sockets for the terminals once you
work out after taking out the relay which ones are required to hard wire
together. With the ignition on only you will hear the pump in the tank
working. If it fires with this you need a new relay. IS the spray from the
cold start very strong? The cold start is on a relay that bypasses the fuel
distibutor if I'm right and will drain any pressure in it, or the fuel valve
in the regulator is sticking. I assume you have not played with the mixture
setting or dropped anything into the plate that regulates the fuel air
mixture etc.
Give me a mail back if that doesn't help.
PAul
"sealdogfish" <sealdogfish@gmail.com> wrote in message
news:1138833954.981435.252450@g44g2000cwa.googlegr oups.com...
> Got a major problem here kindof i think. Got a 1991 Audi 100 with a 5
> cylinder 2.3 litre fuel injected engine.
> you can crank it for ages and it will fire once or twice or sometimes
> not fire at all and just keep cranking. This only happens when the
> engine (water) is cold. If I spray ether into the intake manifold it
> fires continually until I stop spraying but still will not start. I
> have removed two of the fuel lines going to the injectors and there is
> no fuel pumping up them but there is on the cold start fuel line. Im
> not sure if thats normal or not. but if i push up the lever thingy
> behind the air filter then fuel pumps very slowly up all the injector
> fuel lines. help help help!!!!
>
contacts wear out regularly (100k) and often don't give enough power to the
pump, if it is working full on you should hear the pump kick in when you
turn the ignition on for a couple of seconds before you start it. I had a
similar problem on 100 CD similar engine set up 2226cc one. The relays are
about £20 from german and swedish if I remember rightly, however it is
possible to check this by actually bypassing this relay (not adviseable
normally but just for test purposes, I ran my car on a wired switch for
about two weeks until I managed to get a new one) as it's a safety feature
to kill the pump once the engine is not "firing" rev check. You can use a
suitable thick bit of wire between the sockets for the terminals once you
work out after taking out the relay which ones are required to hard wire
together. With the ignition on only you will hear the pump in the tank
working. If it fires with this you need a new relay. IS the spray from the
cold start very strong? The cold start is on a relay that bypasses the fuel
distibutor if I'm right and will drain any pressure in it, or the fuel valve
in the regulator is sticking. I assume you have not played with the mixture
setting or dropped anything into the plate that regulates the fuel air
mixture etc.
Give me a mail back if that doesn't help.
PAul
"sealdogfish" <sealdogfish@gmail.com> wrote in message
news:1138833954.981435.252450@g44g2000cwa.googlegr oups.com...
> Got a major problem here kindof i think. Got a 1991 Audi 100 with a 5
> cylinder 2.3 litre fuel injected engine.
> you can crank it for ages and it will fire once or twice or sometimes
> not fire at all and just keep cranking. This only happens when the
> engine (water) is cold. If I spray ether into the intake manifold it
> fires continually until I stop spraying but still will not start. I
> have removed two of the fuel lines going to the injectors and there is
> no fuel pumping up them but there is on the cold start fuel line. Im
> not sure if thats normal or not. but if i push up the lever thingy
> behind the air filter then fuel pumps very slowly up all the injector
> fuel lines. help help help!!!!
>
#4
Guest
Posts: n/a
Re: Audi 100 5cyl cold start problem
My initial idea is to say the fuel injection relay might not be working the
contacts wear out regularly (100k) and often don't give enough power to the
pump, if it is working full on you should hear the pump kick in when you
turn the ignition on for a couple of seconds before you start it. I had a
similar problem on 100 CD similar engine set up 2226cc one. The relays are
about £20 from german and swedish if I remember rightly, however it is
possible to check this by actually bypassing this relay (not adviseable
normally but just for test purposes, I ran my car on a wired switch for
about two weeks until I managed to get a new one) as it's a safety feature
to kill the pump once the engine is not "firing" rev check. You can use a
suitable thick bit of wire between the sockets for the terminals once you
work out after taking out the relay which ones are required to hard wire
together. With the ignition on only you will hear the pump in the tank
working. If it fires with this you need a new relay. IS the spray from the
cold start very strong? The cold start is on a relay that bypasses the fuel
distibutor if I'm right and will drain any pressure in it, or the fuel valve
in the regulator is sticking. I assume you have not played with the mixture
setting or dropped anything into the plate that regulates the fuel air
mixture etc.
Give me a mail back if that doesn't help.
PAul
"sealdogfish" <sealdogfish@gmail.com> wrote in message
news:1138833954.981435.252450@g44g2000cwa.googlegr oups.com...
> Got a major problem here kindof i think. Got a 1991 Audi 100 with a 5
> cylinder 2.3 litre fuel injected engine.
> you can crank it for ages and it will fire once or twice or sometimes
> not fire at all and just keep cranking. This only happens when the
> engine (water) is cold. If I spray ether into the intake manifold it
> fires continually until I stop spraying but still will not start. I
> have removed two of the fuel lines going to the injectors and there is
> no fuel pumping up them but there is on the cold start fuel line. Im
> not sure if thats normal or not. but if i push up the lever thingy
> behind the air filter then fuel pumps very slowly up all the injector
> fuel lines. help help help!!!!
>
contacts wear out regularly (100k) and often don't give enough power to the
pump, if it is working full on you should hear the pump kick in when you
turn the ignition on for a couple of seconds before you start it. I had a
similar problem on 100 CD similar engine set up 2226cc one. The relays are
about £20 from german and swedish if I remember rightly, however it is
possible to check this by actually bypassing this relay (not adviseable
normally but just for test purposes, I ran my car on a wired switch for
about two weeks until I managed to get a new one) as it's a safety feature
to kill the pump once the engine is not "firing" rev check. You can use a
suitable thick bit of wire between the sockets for the terminals once you
work out after taking out the relay which ones are required to hard wire
together. With the ignition on only you will hear the pump in the tank
working. If it fires with this you need a new relay. IS the spray from the
cold start very strong? The cold start is on a relay that bypasses the fuel
distibutor if I'm right and will drain any pressure in it, or the fuel valve
in the regulator is sticking. I assume you have not played with the mixture
setting or dropped anything into the plate that regulates the fuel air
mixture etc.
Give me a mail back if that doesn't help.
PAul
"sealdogfish" <sealdogfish@gmail.com> wrote in message
news:1138833954.981435.252450@g44g2000cwa.googlegr oups.com...
> Got a major problem here kindof i think. Got a 1991 Audi 100 with a 5
> cylinder 2.3 litre fuel injected engine.
> you can crank it for ages and it will fire once or twice or sometimes
> not fire at all and just keep cranking. This only happens when the
> engine (water) is cold. If I spray ether into the intake manifold it
> fires continually until I stop spraying but still will not start. I
> have removed two of the fuel lines going to the injectors and there is
> no fuel pumping up them but there is on the cold start fuel line. Im
> not sure if thats normal or not. but if i push up the lever thingy
> behind the air filter then fuel pumps very slowly up all the injector
> fuel lines. help help help!!!!
>
#5
Guest
Posts: n/a
Re: Audi 100 5cyl cold start problem
I will try bypassing the relay but when i turn the key to on I can hear
the fuel pump going and fuel is definately pumping, though im not sure
how strongly. When cold starting are the 5 injectors supposed to be
working or is it just the cold start injector that goes until it starts
up properly? also can i just take out the cold start injector and turn
it on and see if it sprays?
the fuel pump going and fuel is definately pumping, though im not sure
how strongly. When cold starting are the 5 injectors supposed to be
working or is it just the cold start injector that goes until it starts
up properly? also can i just take out the cold start injector and turn
it on and see if it sprays?
#6
Guest
Posts: n/a
Re: Audi 100 5cyl cold start problem
I will try bypassing the relay but when i turn the key to on I can hear
the fuel pump going and fuel is definately pumping, though im not sure
how strongly. When cold starting are the 5 injectors supposed to be
working or is it just the cold start injector that goes until it starts
up properly? also can i just take out the cold start injector and turn
it on and see if it sprays?
the fuel pump going and fuel is definately pumping, though im not sure
how strongly. When cold starting are the 5 injectors supposed to be
working or is it just the cold start injector that goes until it starts
up properly? also can i just take out the cold start injector and turn
it on and see if it sprays?
#7
Guest
Posts: n/a
Re: Audi 100 5cyl cold start problem
I will try bypassing the relay but when i turn the key to on I can hear
the fuel pump going and fuel is definately pumping, though im not sure
how strongly. When cold starting are the 5 injectors supposed to be
working or is it just the cold start injector that goes until it starts
up properly? also can i just take out the cold start injector and turn
it on and see if it sprays?
the fuel pump going and fuel is definately pumping, though im not sure
how strongly. When cold starting are the 5 injectors supposed to be
working or is it just the cold start injector that goes until it starts
up properly? also can i just take out the cold start injector and turn
it on and see if it sprays?
#8
Guest
Posts: n/a
Re: Audi 100 5cyl cold start problem
I also forgot to mention that the car does start every three days or so
and once it starts and warms up it runs fine. you can turn it off and
restart it but when it cools back down it wont start again for a few
more days at least.
and once it starts and warms up it runs fine. you can turn it off and
restart it but when it cools back down it wont start again for a few
more days at least.
#9
Guest
Posts: n/a
Re: Audi 100 5cyl cold start problem
I also forgot to mention that the car does start every three days or so
and once it starts and warms up it runs fine. you can turn it off and
restart it but when it cools back down it wont start again for a few
more days at least.
and once it starts and warms up it runs fine. you can turn it off and
restart it but when it cools back down it wont start again for a few
more days at least.
#10
Guest
Posts: n/a
Re: Audi 100 5cyl cold start problem
I also forgot to mention that the car does start every three days or so
and once it starts and warms up it runs fine. you can turn it off and
restart it but when it cools back down it wont start again for a few
more days at least.
and once it starts and warms up it runs fine. you can turn it off and
restart it but when it cools back down it wont start again for a few
more days at least.