FUEL SYSTEM

Asked by Mar 27, 2013 at 08:43 PM about the 1986 Volkswagen Jetta GL

Question type: Maintenance & Repair

WHEN I PUSH DOWN THE GAS PEDLE IT DOSN'T DO
ANYTHING DIES?

11 Answers

93,665

How do you know that it's the fuel system? Get the codes read at the parts store to find out what failed. Write down the code number and post it here.

1 out of 1 people think this is helpful.
2,765

A 1986 vw doesn't have a diagnostic socket or anything like it. You will need to check it step by step.

3 out of 3 people think this is helpful.
4,525

First guess, clogged CAT...there may be a test port on the exhaust manifold...a protruding tube with a cap on it. Pop the cap and see if idle improves.

2,765

Check the pump pressure and the plate on the CIS injection system maybe it's dirty or stuck. Check the fuel filter and the pressure accumulator also on the back. Under the car's left side.

2 out of 2 people think this is helpful.
195

CAT or injection? on a '86? what did u smoke? seems to me wrong fuel mixture in the carb or ignition out of sequence!

4,525

86 Jetta in US has injection and a CAT...

2,765

that is correct, scott. vw came with a mechnical injection system since 1984

4,525

Wasn't 86 Jetta CIS-E?...I had one...10% power increase over the 85 model due to the improved injection system... 100 hp out of 1.8l 8-valve...38 mpg at 60mph as well...I really like that little car.

2,765

they came with different injection in us it was called cis but i do not know the variations. in europe, they were k-jetronic, ke-jetronic, and ke2- jetronic depending on the year and car

My first thing would be to do a "tune-up"....check plugs, distributor, etc....I had a similar problem and guess what...it was new " fouled plugs"....cleaned them and it runs like a charm. Had a battery problem which caused all of the "fouling"......I presume...:>) Best wishes RCB

30

Fuel pump is not powering on? pump relay clicks and seems working. starts and dies with starting fluid. primary concern is the fuel pump is not powering on. what could be the issue? actual fuel pump bad? could bad fuel filter or clogged catalytic converter even cause no power to the pump?

3 out of 3 people think this is helpful.

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