rough at idel but smoothes out as it warms up????

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m37m38
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rough at idel but smoothes out as it warms up????

Post by m37m38 »

My M38 will idle really rough if I haven't driven her for a while. After a few miles she then kicks right into full step - smooth as can be .

Any ideas as to waht could be causing this????
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wesk
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Post by wesk »

Most likely culprit is sticking valve. Do a compression cold before you start it the next time it has sat awhile. Then do a vacuum gage test set while it is running rough.
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

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