Question about 1998 Volkswagen Passat

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Engine starts and runs but then won't start after driving

After sitting for several hours it will start

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Standard or automatic, engine specs?

Posted on Apr 14, 2014

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Posted on Jan 02, 2017

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Why it has trouble starting the first time every day, but works fine later, and runs good


If it only gives trouble after standing unused for several hours, I would suspect the gas lines, possibly. After sitting for several hours, if your gas lines are already gunked up, then it's difficult to get the fuel to the engine after sitting for several hours. Once you use it, and warm it up, then it's not as difficult getting fuel through gunked up lines. Just a possibility.

Jun 04, 2013 | 1995 Jeep Grand Cherokee

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I have a 1995 Mercedes Benz SL 500 that runs rough when started after sitting for several days.


hi Jhlightcap.

The Common Problem: Rough Running Engine

A properly-operating engine should run smoothly and without excess noise. If your engine starts operating in a manner that gives you the perception of "running rough", it is likely due to a handful of common causes. A mechanic would investigate these common causes first in order to rule out a simple explanation for the engine's unsatisfactory operation.
The common causes for rough running in an engine are:
  • Engine miss
  • Vacuum leak
  • Dirty fuel injectors
  • Carburetor problems
  • EGR valve
  • Ignition coil
  • Spark plug wires
  • have a look at this link.
Rough Running Engine James on Engines 2

Dec 10, 2017 | Cars & Trucks

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Won't start after sitting for a few days


Could be loosing fuel pressure thru the pressure regulator or the valve in the fuel pump. The pressure should hold for several days when the engine is off.
I would have the fuel pressure tested before and after you try to start the engine.

Sep 29, 2012 | 1996 Chevrolet Tahoe

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Our 2003 Saturn L200 turns over, but won't start...like it's not getting gas. This just started happening and only after we've already driven it that day. The first time it happened was...


Check fuel pressure at the injector rail. If good, suspect crankshaft position sensor--when it fails to start, check for sparks by pulling an ignition wire off the coils and holding it close to the coil with an insulated tool while someone cranks the engine. If no sparks, replace the sensor.

Jul 14, 2017 | 2003 Saturn L-Series

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Rough start at first start when car has sat for several hours


You probably purchased bad gasoline, not an uncommon problem with the gas that's going around now. Run it down to about a quarter tank and then try filling up with a higher octane rating.

Nov 18, 2008 | 2006 Mazda 3

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