Will Not Start

[bearmach 0]

HI

i have rebuilt my engine and put all back together, I am getting petrol up to the fuel rail but from there i am not getting fuel into the engine. The spark plugs are dry, I have had injectors remanned, so should not be a problem there. I have a crank sensor but it does not plug into any where, so can i rule this out or should it go some where. I have a 1.6 1990 gti

Any advise.

[smithy 1]

what age is the car?

 

the early models the crank sensor was used for setting timing on diag machine at pug.

 

the fuelling is controlled by the sensor in dizzy,it sends signal to coil/ign amp to spark and also to tachy relay to energise fuel pump and injectors.

was the engine running ok before the rebuild? if so then i would start by rechecking all the connections around engine as it must be something you have disturbed.

[bearmach 0]

It is a 1990 model but right on the change. I had it on the rolling road before i started any work on it to make sure enginge was good, When i stripped it down it a was running ok, the crank shaft wire was frayed when i stripped it down and not connected to anything

[large 33]

Has it got a cat? If no i don't think the CAS is needed.

[bearmach 0]

there is no cat on it

[large 33]

I don't think you will need the CAS then.

[Tom Fenton 1,547]

The early system which it sounds like you have, uses the distributor to give a signal to the ECU. No signal = no fuel, and probably no spark either.

 

I would check and double check the plug to the dizzy, I have seen before now the pins push out of the housing so that the plug is in place but no electrical contact.

[pug_ham 245 3 Cars]

Has it got a cat?

The 1.6 GTI was never sold with a cat so on standard ecu does not need the CAS.

 

Have you got a spark, can you hear the injectors cracking while you crank the engine?

 

Graham.

[bearmach 0]

Yes i have spark but no fuel getting to the plugs. You can hear the injectors clicking as if they are getting power. I have replaced the dizzy so i am woundering if it is that thats causing it not to start

[smithy 1]

Yes i have spark but no fuel getting to the plugs. You can hear the injectors clicking as if they are getting power. I have replaced the dizzy so i am woundering if it is that thats causing it not to start

 

If you got spark and can hear injectors cycling then sensor in dizzy is working,If you get fuel at rail but nothing out of injectors I would say injector problem personally.

Look at it logically you say fuel at rail,got spark just no fuel out of injectors you also say injectors are clicking so must be getting energised.that only really leaves an issue with the injectors themselves.so long as you are 100% you get fuel up there ok and they are clicking.

One final thing are the fuel pipes definitely connected to feed and return correctly?

[large 33]

The 1.6 GTI was never sold with a cat so on standard ecu does not need the CAS.

 

Graham.

 

I was 99% it would be on jetronic, but I have given a couple of misleading replies lately so just trying to make sure I had all the facts.

And the fact I didn't know that.

 

 

The pressure line goes to the right of the fuel rail, and the return comes off the FPR.

[pug_ham 245 3 Cars]

Have you tried a diferent tachymetric relay?

 

Graham.