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Model specific boards => Golf mk2 => Topic started by: Bigdunc on 12 July 2011, 19:09

Title: car only starting when manually injecting fuel :)
Post by: Bigdunc on 12 July 2011, 19:09

Hi guye been having problems with car recently, we have done a recent head rebuild and were struggling to get car to star.

We have finally got car to start but it will only start if you manually inject fuel in to the throttle body. The injectors are injecting but for some reason the car wont start with just them alone.

I have been reading up and seen that some people have had problems with a faulty ECU and it messing up the way the injectors work. I have managed to get a new ECU to try tomorrow.

If this solves the problem then GREAT NEWS But if not what do i then start to look for??

Fuel Pump / Relay
Fuel preasure regulator
Air flow meter
injectors
???

Title: Re: car only starting when manually injecting fuel :)
Post by: mk2bal on 12 July 2011, 20:10

You need spark compression and fuel. You have fuel. Check spark and compression + air leaks, if it all worked before taking it apart. Guessing its an 8v digi?

Title: Re: car only starting when manually injecting fuel :)
Post by: Bigdunc on 12 July 2011, 20:57

Yes it's 8v digi, have compression just only wants to start when manually feeding fuel

Title: Re: car only starting when manually injecting fuel :)
Post by: Benrevs on 12 July 2011, 21:36

Can you hear the fuel pump buzz when the ignition is on?

Title: Re: car only starting when manually injecting fuel :)
Post by: danny_p on 12 July 2011, 22:58

if the fuel pumps run,    check the injectors are getting 12v

Title: Re: car only starting when manually injecting fuel :)
Post by: danny_p on 12 July 2011, 23:02

steady up scrap that.    change of plan,  you've had the cyl head off....


take the fuel ines off the fuel rail and swap them over   sounds like there on the wrong way round.     if your trying to shove fuel up the outlet of the pressure reg it ain't going to go

Title: Re: car only starting when manually injecting fuel :)
Post by: Bigdunc on 13 July 2011, 00:31

The injectors are doing something, only 1 fuel line come off while head off kept the other attached to the fuel pressure regulator, it seams like the injectors are flooding or not responding as they should, fuel is getting through so doubt it's fuel pump but possible.

Title: Re: car only starting when manually injecting fuel :)
Post by: Wayne on 13 July 2011, 13:51

Could be a blown ecu, do you refit all the earths as required.

Title: Re: car only starting when manually injecting fuel :)
Post by: Bigdunc on 13 July 2011, 22:08

changed ecu and the air flow meter head and mooved the dizzy and she starting :) just gonna have to run her for a week with her tuned my ear till i can get a gun to her :)