Posted: Mon Apr 16, 2018 6:43 am Post subject: m38 operates sometimes in 3 cylinder......why?
Hi my m38 operates sometimes with the 3 cylinders!!!! When it is cold and i fired it up at least 90% it operates with 3cylinders. Then after it warms up it runs ok. I checked the spurk plugs and i saw in one of them oil.... not too much but it was there. i also checked the spurk cables and was ok. After all i take it for a ride and as it works ok then suddenly again 3 cylinders for 10 minutes and then in 4 again!!!!!
i m confused what is it wrong!!!! A friend told me to make a test compresion and see if all 4 cylinders have the correct presure!!!!!!
A compression test is a good start. Also a cylinder leak down test will reveal the condition of the piston rings.
It may be as simple as a tired spark plug. You could switch the oily one with another and see if the problem follows that plug or if the problem stays with the same cylinder. _________________ 1952 Dodge M37, 1968 Dodge M615 export ambulance, 1948 FrankenJeep CJ2A/M38, 1951 M38, (2) M1941 Sperry 60" Anti-Aircraft Searchlight, (3) John Deere M-gators.
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