Hard Start

Tiny
OLDCRAPPY1
  • MEMBER
  • 2002 DODGE CARAVAN
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 155,000 MILES
My 2002 Dodge Caravan is hard to start when engine is cold but it is hot outside 96 or hotter acts like it is not getting fuel. Engin has to turn over several times before it fires. It has 155,000 miles on it.
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Saturday, May 21st, 2011 AT 2:49 PM

5 Replies

Tiny
CARADIODOC
  • EXPERT
Sounds like fuel pressure might be dropping. To prove it, turn the ignition switch to "run", wait a few seconds, turn it off, wait a few seconds, turn it to run again and wait a little, then try to start it. Each time you turn it to run the fuel pump will run for one second to build up pressure. If that helps, the most likely cause is a leaking injector that lets the pressure bleed off. Very often you can overcome that by simply pausing with the switch in the run position for one or two seconds before you turn it all the way to the "crank" position.
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Saturday, May 21st, 2011 AT 6:03 PM
Tiny
OLDCRAPPY1
  • MEMBER
Thanks Doc will give it a try, but if it is a leaky injector it would be hard to start all the time if it sat for a while. This only happens at work after sitting out in the sun for 8 hrs.
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Sunday, May 22nd, 2011 AT 6:19 PM
Tiny
CARADIODOC
  • EXPERT
The drop in pressure can produce misleading symptoms. Mine will start instantly after sitting overnight or less than 15 minutes after stopping the engine. It has a long crank time, (up to five seconds), after the engine has been off more than around 15 - 20 minutes.

Besides waiting for fuel pressure to build up, it may be necessary to clear a flooded condition from leaking fuel before the engine will start. That would be aggravated in higher temperatures. When that fuel is cooler, it will condense and puddle in the intake manifold and will be burned off after the engine starts. In warmer temperatures, it is more likely to vaporize and cause that flooded condition and hard starting.
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Sunday, May 22nd, 2011 AT 9:21 PM
Tiny
OLDCRAPPY1
  • MEMBER
Hey Doc the van starts great now with the turn and wait and turn and wait then start procedure. Thanks for the great tip.
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Wednesday, May 25th, 2011 AT 10:45 PM
Tiny
CARADIODOC
  • EXPERT
Glad I could help, but that isn't a fix, just a clue if finding the real cause.
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Thursday, May 26th, 2011 AT 8:39 PM

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