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Old 07-06-2001, 03:38 AM
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jerryrigged
jerryrigged is offline
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Firing Order for 1998 4.2

Sorry, I left my truck at my Dad's house at the lake, so he could haul some stuff back down state. I didn't think to look at it, either. I think he is coming down Sunday night. Maybe, someone else can help you out before then.

From memory, I think they match up with the way the cylinders are numbered for #1,2,3, and the other side goes (front to back) #6,4,5. I am almost sure, but maybe you should wait until I can confirm it.

On the other hand, I doubt any damage would result from trying [font color=red]{insert standard disclaimer here}[/font]. Just let it idle. If it runs like crap shut it off. This may result in a check engine light and a stored code. If you don't have access to a code reader, unhook your battery to clear it.

On a V6 DIS (distributerless ingition system), such as ours, there are three coils in the coil-pack, with two spark plug leads each. When it's time for one cylinder to fire, the other cylinder attached to that coil fires as well. I think this happens when that cylinder is 360 degrees from when it needs to fire (near the end of the exhaust stroke), so it has no effect. So, if you think about it, the coils can't be connected to cylinders that use the same rod journal on the crank (opposing cylinders can't be at TDC at the same time). If I am right about #1,2,3, that leaves two possible combinations for the other three cylinders (starting to sound like a brain teaser).

Then again, maybe the inconsequential fire doesn't happen during the exhaust stroke, or #1,2,3 go from back to front. Ah well, I wish my memory was better.

BTW, no, I didn't get an e-mail from you. I checked and it is correct, when you click the mail icon above.???