audi 90 poor cold start...... - Page 2

msh · 25-09-08, 11:35 AM

There is better way how to check cold start injector - remove it, when engine is cold, then crank engine and look, does this injector sprays fuel or not. And to check if it's not leaking, just unplug wire from it. Only disconnect center wire from distributor and target injector at safe point

20vcqdriver · 25-09-08, 11:49 AM

Only problem with this is having fuel spraying everywhere, having then to plug the hole in the manifold and possibility of damaging the fibre gasket. Have you tried starting it from cold with the cold start injector unplugged altogether to see if it makes any difference?

msh · 25-09-08, 11:56 AM

Everywhere?

Have u ever seen one nozzle in action, really?

Goddamn it, british fears from fuel are unmeasurable

Just extinguish your cigar, and nothing will happen

john johnson · 25-09-08, 12:30 PM

its the thermotime switch on the back of the block and i agree with removing the cold start injector and cranking it over , if its goosed it dribbles if anything at all. if it works fine it gives a nice light mist or puff of fuel for a few seconds approx just to get it running . been there and done that on one of the wr's this year

johnboy · 25-09-08, 05:43 PM

blimey guys thanks alot for your info some good things there to try! i have already done a few checks but fuel pump relay and fuel pump itself sounds like the best next things to look into! as said befor thanks very much big thumbs up to you all!!!!

25-09-08, 11:49 AM	#12
20vcqdriver 4 ring whore! Classic Audi Club Member Join Date: Dec 2007 Location: Wirral Posts: 3,910	cold start Only problem with this is having fuel spraying everywhere, having then to plug the hole in the manifold and possibility of damaging the fibre gasket. Have you tried starting it from cold with the cold start injector unplugged altogether to see if it makes any difference?

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25-09-08, 11:35 AM	#11
msh 4 ring whore! Join Date: Jun 2008 Location: Rucava, Latvija Posts: 3,816	There is better way how to check cold start injector - remove it, when engine is cold, then crank engine and look, does this injector sprays fuel or not. And to check if it's not leaking, just unplug wire from it. Only disconnect center wire from distributor and target injector at safe point

25-09-08, 11:56 AM	#13
msh 4 ring whore! Join Date: Jun 2008 Location: Rucava, Latvija Posts: 3,816	Everywhere? Have u ever seen one nozzle in action, really? Goddamn it, british fears from fuel are unmeasurable Just extinguish your cigar, and nothing will happen

25-09-08, 12:30 PM	#14
john johnson Moderator of sausages Classic Audi Club Member Join Date: Sep 2008 Location: sheffield Posts: 13,331	its the thermotime switch on the back of the block and i agree with removing the cold start injector and cranking it over , if its goosed it dribbles if anything at all. if it works fine it gives a nice light mist or puff of fuel for a few seconds approx just to get it running . been there and done that on one of the wr's this year

25-09-08, 05:43 PM	#15
johnboy Newbie! Join Date: Sep 2008 Posts: 4	blimey guys thanks alot for your info some good things there to try! i have already done a few checks but fuel pump relay and fuel pump itself sounds like the best next things to look into! as said befor thanks very much big thumbs up to you all!!!!