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occasional stumbling at startup

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Old 04-09-2013, 09:35 AM   #1
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occasional stumbling at startup

Two or three times lately, my truck has run really rough when I start it, like a cylinder or maybe even two was out. I'm able to get it right just by revving the engine some, but if it happens more in the future I'd like to know what to look for.

Could it be a coil maybe? I was thinking plugs/wires at first (they're old and I need to change them anyway) but now that I think about it I'm not sure.

The truck has a butt load of miles, about 290K.
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Old 04-09-2013, 12:26 PM   #2
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Sub'd
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Old 04-10-2013, 06:02 AM   #3
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Possible to have a head gasket on its way out. Could be coolant bleeding off in the in combustion chamber after sitting awhile. Will clear up after a few minutes of the engine running. Keep a eye on your coolant
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Old 04-10-2013, 07:04 AM   #4
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TUNE IT UP

Its way overdue anyway. Plugs, wires, air filter, pcv, etc.
If your problem is still there, then troubleshoot further.
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Old 04-10-2013, 08:51 AM   #5
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Quote:
Originally Posted by Mossy View Post
Possible to have a head gasket on its way out. Could be coolant bleeding off in the in combustion chamber after sitting awhile. Will clear up after a few minutes of the engine running. Keep a eye on your coolant

Funny thing, I noticed last week my coolant was low. Can you elaborate on this a little?
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Old 04-10-2013, 12:54 PM   #6
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If you do have a bad head gasket, you may see a change in color in your coolant and may even notice visible traces of the oil in your coolant. You can also smell it in the exhaust as it will have a sweet aroma. Top up your coolant, keep an eye on it, and an eye on your temp guage. If you see a spike in your temp guage, stop driving immediately. If you do have a bad head gasket, they'll take off the top end, put in a new gasket and check the head to make sure it is flat and hasn't warped.

I'd start with a new air filter, and plugs, see if that helps. Start cheap before you get into big ticket items.
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Old 04-10-2013, 01:15 PM   #7
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One more tip/trick when you are replacing the spark plugs. When at the auto parts store, get a length of hose about 10" long or so that will fit over the head of the spark plug, where the wire attaches. When you back out the plug, your deep socket might not hold the plug and then you'll be cursing about how to get it out. If that happens take the hose and push it down on top of the plug to remove. When you put the plugs back in, you want to make sure you don't crossthread the head. So, put the plug on the end of the hose and use that to hand thread the sparkplug before you go at it again with your socket wrench.

like this.... http://www.filtsai.com/accord/spark_..._plug_hose.jpg
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Old 04-10-2013, 03:01 PM   #8
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Quote:
Originally Posted by mdub View Post
One more tip/trick when you are replacing the spark plugs. When at the auto parts store, get a length of hose about 10" long or so that will fit over the head of the spark plug, where the wire attaches. When you back out the plug, your deep socket might not hold the plug and then you'll be cursing about how to get it out. If that happens take the hose and push it down on top of the plug to remove. When you put the plugs back in, you want to make sure you don't crossthread the head. So, put the plug on the end of the hose and use that to hand thread the sparkplug before you go at it again with your socket wrench.

like this.... http://www.filtsai.com/accord/spark_..._plug_hose.jpg
OR, you could purchase a spark plug socket (of the right size) that 'grabs' on to the plug just enough.
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