What the @#$%??????????
Thread Starter
7th Gear
Joined: Mar 2002
Posts: 7
Likes: 0
What the @#$%??????????
I posted the other day about a possible fuel problem. Replaced the fuel distuibitor and cleaned the lines. Injectors are new. Anyway heres the new problem, I went to check and see if I had pressure in the fuel lines and took off an injector. The keys were in the ignition in the on position, I bumped the distruibor cap were all my wires are and it caused fuel to come out of the injector. Car still won't start. Well it stars them turns off in a few seconds. I'm thinking my timing is way off, but I don't have a clue. I don't know why moving the ditriubor would cause a change in fuel pressure. Please someone help!!!!!!!!!!
Tiak Williams
79 928 white 100K
Tiak Williams
79 928 white 100K
Racer
Joined: Aug 2001
Posts: 470
Likes: 0
From: Attleboro, MA
Tiak,
Wally had given you some good advice in your last thread and in his post, may be a clue to your current question (problem with the ignition signal).
I don't know much about the CIS system but in the newer L-Jet cars like mine, there are 2 seperate signals that trigger the fuel pump. One is at initital start up and its the 2 second pulse that has been refered to (to initially pressurize the system). The other signal comes after the car starts. That other signal is required to keep the pump running once the car starts or the system will de-pressurize and it will stall out. On my car, that siganl comes from the air flow meter. On yours, is it possible its ignition related... maybe a coil or distributer pulse train??
If the car starts, then stops, I would rule out timing (both electronic and valve). My bet is that your either loosing spark, or fuel pressure. I would attach an inductive timing light to the coil wire and hold the trigger while someone starts the car. If the timing light fires steadily (in accordance with RPM) as the engine dies, I would hook up a fuel pressure guage and re-run the same test.
Wally had given you some good advice in your last thread and in his post, may be a clue to your current question (problem with the ignition signal).
I don't know much about the CIS system but in the newer L-Jet cars like mine, there are 2 seperate signals that trigger the fuel pump. One is at initital start up and its the 2 second pulse that has been refered to (to initially pressurize the system). The other signal comes after the car starts. That other signal is required to keep the pump running once the car starts or the system will de-pressurize and it will stall out. On my car, that siganl comes from the air flow meter. On yours, is it possible its ignition related... maybe a coil or distributer pulse train??
If the car starts, then stops, I would rule out timing (both electronic and valve). My bet is that your either loosing spark, or fuel pressure. I would attach an inductive timing light to the coil wire and hold the trigger while someone starts the car. If the timing light fires steadily (in accordance with RPM) as the engine dies, I would hook up a fuel pressure guage and re-run the same test.
Banned
Joined: Feb 2002
Posts: 5,248
Likes: 5
From: Ft. Lauderdale FLORIDA
Watercooled VW guy here...
Yeah, in a previous life I had a Rabbit. CIS injection, like your 928.
[can you imagine something as dissimilar as a '77 Rabbit and a 928? Well, the bunny had a built motor and would leave 40 feet of rubber in first, and burn them all the way to fourth..gawd I needed better tires!]
But anyway, the reason your car is starting is because the cold start valve is firing. This device sprays fuel directly into the intake during cranking to help start the engine. This is the only electric injector in the engine; the rest are just nozzles. Technically, this engine is mechanically fuel injected. Be glad- the later elecronic injectors are NOTHING but trouble-trust me!!
After the day that I sat my 140 pound frame down in my Rabbit and pushed the seat through the badly rusted out floorboards...
-Looking up at the steering wheel and the instrument cluster is interesting...
[Golfs were German built up to 1979, and the steel came from East Germany...need I say more?]
I soon found myself driving an '85 Scirocco. Only, this one had the EXTREMELY rare [53 sets sold, only 4 to Sciroccos]Jackson Racing factory turbo. Covered under the factory warranty, this system worked with no intercooler and increased fuel with the cold start valve....basically, it fired this valve to flood the intake with fuel under boost. 6 pounds yielded in the neighborhood of 140 hp, and the lightweight [2200 lb.] car would accelerate like a bottle rocket. A 5.0 Mustang would beat me, but to 60 he was only a few feet ahead! GAWD it scared the hell out of more than a few of those guys....
Anyway, the fact that you touched the ignition distributor and had the injector spray bothers me. It says that perhaps there is a wiring harness problem...probably the worst news you can get. I was ready to tell you that "control pressure" was not correct, to check the control pressure regulator with the Bosch manual [I have it...email me with your questions if you don't and there is no Barnes & Noble nearby] as it is obvious your injectors are not receiving pressure.
Normy~
'85 S2, former type 17 [Golf mk1], type 53 [Scirocco], and type 50 [Corrado VR6].
Yeah, in a previous life I had a Rabbit. CIS injection, like your 928.
[can you imagine something as dissimilar as a '77 Rabbit and a 928? Well, the bunny had a built motor and would leave 40 feet of rubber in first, and burn them all the way to fourth..gawd I needed better tires!]
But anyway, the reason your car is starting is because the cold start valve is firing. This device sprays fuel directly into the intake during cranking to help start the engine. This is the only electric injector in the engine; the rest are just nozzles. Technically, this engine is mechanically fuel injected. Be glad- the later elecronic injectors are NOTHING but trouble-trust me!!
After the day that I sat my 140 pound frame down in my Rabbit and pushed the seat through the badly rusted out floorboards...
-Looking up at the steering wheel and the instrument cluster is interesting...
[Golfs were German built up to 1979, and the steel came from East Germany...need I say more?]
I soon found myself driving an '85 Scirocco. Only, this one had the EXTREMELY rare [53 sets sold, only 4 to Sciroccos]Jackson Racing factory turbo. Covered under the factory warranty, this system worked with no intercooler and increased fuel with the cold start valve....basically, it fired this valve to flood the intake with fuel under boost. 6 pounds yielded in the neighborhood of 140 hp, and the lightweight [2200 lb.] car would accelerate like a bottle rocket. A 5.0 Mustang would beat me, but to 60 he was only a few feet ahead! GAWD it scared the hell out of more than a few of those guys....
Anyway, the fact that you touched the ignition distributor and had the injector spray bothers me. It says that perhaps there is a wiring harness problem...probably the worst news you can get. I was ready to tell you that "control pressure" was not correct, to check the control pressure regulator with the Bosch manual [I have it...email me with your questions if you don't and there is no Barnes & Noble nearby] as it is obvious your injectors are not receiving pressure.
Normy~
'85 S2, former type 17 [Golf mk1], type 53 [Scirocco], and type 50 [Corrado VR6].
Thread Starter
7th Gear
Joined: Mar 2002
Posts: 7
Likes: 0
Normy ,
Thanks for the tip. Your right I'm not getting pressure to the fuel injectors. The fuel distributor works however, I'm going to get a manual on CIS injection and try to pin point the problem.
Thanks!
Thanks for the tip. Your right I'm not getting pressure to the fuel injectors. The fuel distributor works however, I'm going to get a manual on CIS injection and try to pin point the problem.
Thanks!
