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1996 GMC Suburban 2500 Question: What make an engine run hot in only one cylinder?

 

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Robbin74, 7.4L V8, Commerce, GA, July 06, 2013, 12:01
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misfire code p-1345

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  • Answer #1

    July 06, 2013, 14:15
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    All OBD II misfire codes are as follows, PO 300 to PO 308 for a V8! Why do you think it's overheating on one cylinder only? Do you mean misfire on only one cyl.?

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    Robbin74, July 07, 2013, 09:43
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    Thanks for your response. The information on OBD-ll code is new to me I will recheck that. the reason for one cylinder running hot is just a feel. It looks like the heat off the engine is more pronounced to the rear of the engine (#7 cylinder). The temp. gauge reads normal along with oil pres. I am going to borrow an infrared eat gun to see more accurately. Could the rear main bearing? and if so is there any way to check without pulling oil pan?

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