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Rough idle at warm up (M2)


mariom2
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I am now to this forum, so I thought I ask the experts, car not only driving rough at idle, but it dyes while driving. No problem to restart, but it could stop 3-4 times on a short trip. I also smell significant fuel in around the gas tank???

car has been modified with a S14 engine, fun all around, but I just bought it and am sorting through things.

Where do I start?

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you need to go into deep details about your supply fuel pump?,

routing of hoses?

any sharp bends or kinks?,

the wiring throughout?,

Got temp sensors ? working correctly??

your fuel pressure reading?............. photos

any fuel small is a bad thing.

Is it the original ignition/fuel management

out of the M3 donor car?

or some home grown modified electronic stuff?

was the warm-up running qualities know

when the S14 lived in it's original body?

Gas SMELL! = Loss of pressure?, danger of fire?,

killing you and your passengers?

Have a great Saturday

p.s. need photos

sometimes all your describing things does

nothing for long distance problem solving -

one good photo might

show someone here the cause right away.

S14motorcutaway.jpg

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Guest Anonymous

First thing to look for would be Cracks in the rubber filler neck that feed the gas tank......they ALL crack. Give it a squeeze and they usually are pretty obvious. ( If its hard and does not want to Squeeze then it most surely is cracked too)

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Let's see the car :)

How low is it idling? You can adjust that big screw just above the "M" in this pic to bring up the idle if needed.

http://smg.photobucket.com/albums/v355/raykoke/?action=view&current=IMG_0008.jpg

Like CD said, it could be anything. When was the car last tuned up?

Look for gas leaks at the tank seam also, especially when full.

GL,

Ray

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