starting truck
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Senior User
Joined: May 2010
Posts: 169
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From: Akron,ny
starting truck
after i have started my truck and its gotten warmed up ill go to start it again and it will be a hard start like the battery is dying eventually once i give it gas it will start also when i shut it off the truck with still rumble a bit for a few seconds please help
Posting Guru
Joined: Mar 2010
Posts: 1,196
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There are a couple potential issues with the hard starting. Could be the battery is going bad, have it load tested. Could be the alternator isn't sufficiently charging th system, have it load tested. Could be the starter is in fact going bad. If you have headers, the starter could be getting heat soaked.
As for the rumbling, this is probably what most refer to as dieseling, which typically occurs due to a timing issue. So I'd get a timing light on there and see where you're at.
As for the rumbling, this is probably what most refer to as dieseling, which typically occurs due to a timing issue. So I'd get a timing light on there and see where you're at.
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
The dieseling (run-on after shut-off) can be caused by timing, but in most cases it's caused by high curb idle, a vacuum leak, or increased combustion chamber temperature due to a lean mixture (which a lot of the time is because the EGR system has been removed or no longer works). I'd take a look at your plugs and see if they are white.
