over fueling pls help

hi all

@ last got my blue cab on the road, bit lumpy driving ti to garage for mot but i made it, when they tried to set it up on co2 machine it was running way too rich, they tried for ages and couldnt understand why its over fueling, can you help pls


1983 1.8gti cab

also u know the device that normally sits on the airflow on the corner mine hasnt got 1 … would this cause the problem?

Are you saying the garage failed to fix the issue? What did they do, adjust the mixture screw but see no effect on the mixture, or something else? I assume you're not going to pay them unless they fix the car, or have you already??

yes they adjusted the screw, but it was way over fuelling, they said change yr plugs and look for an air leak, no i didnt pay them

OK I'm confused what your plans are - to try fix it yourself using help from the forum; or to let the garage fix it. They've had the advantage of a fully equipped workshop and the car in the workshop and able to run a battery of tests on it, and all the forum has is a couple of lines of description from you.

There are a few other things which can cause too high mixture, the main one on a K-Jet car is the fuel pressure being wrong; but blocked air filter or induction pipework might also play a factor.

I am guessing you don't have a fuel pressure gauge? Does the garage…..???

1) its over fuelling , had garage try to set it up on co2 machine and they cant do it , said its way too much fuel going into it
 2) is there suppost to be an earth strap from the coil to rocker cover , if there isnt one will this make any difference?
 3) i have a poor spark… sometimes on turn over its like having a flat battery
 4) on the top section of the metering head there is a device that has a pipe coming off it and heads towards inlet and has electric plug that goes into it , well on mine its not there the other pipe it blanked off and there is no electric plug anywhere on the loom for this to fit .
 5)its miss firing, had pressure check done and when it does actually tick over its not too bad
 
all help very much appraciated i dont want to sell or strip it , i took it for mot and it only needs wheel bearing,brake pipe

1st check the injectors, then change the wur, then the metering head. ideally you need k-jet fuel pressure gauges to check everything over, otherwise you're just guessing!

plenty of infos on here about testing the injectors so get searching

check your return lines not blocked.....worth a try

why dont you let the garage deal with it m8, as paul and someone else pointed out its guess work and and to be fair if you know you got bits missing why are you asking if that makes a different,

vw did not put those parts on for a laugh no offense ment by that,

since_1983 said

why dont you let the garage deal with it m8, as paul and someone else pointed out its guess work and and to be fair if you know you got bits missing why are you asking if that makes a different,

vw did not put those parts on for a laugh no offense ment by that,

why …… cause money dont grow on tree's …. also i asked if it should be there  for a reason, as it turns out mone didnt have one,any way i fixed it now , replaced the following ……. injectors, all injector pipes,dizzy,wur,metering head,plugs, job done!

money dont grow on trees lol with all those parts it does, glad to hear all good now