john deere two cylinder

Mike M Indiana · Jun 26, 2014

I have a john deere 630 that will only run on one cylinder. I have bright blue spark ..recently renewed all ignition. plug is wet when pulled so it is getting gas. If I have spark and gas why wont the right cyl fire

robgIN · Jun 26, 2014

you must be missing the 3rd component required for combustion, compression. Check for sticking valve or one that is adjusted too tight.

Mike M Indiana · Jun 26, 2014

o.k. thanks Will do.

fixerupper · Jun 26, 2014

(quoted from post at 17:40:18 06/26/14) you must be missing the 3rd component required for combustion, compression. Check for sticking valve or one that is adjusted too tight.

Or a valve that's backed away. Had that happen with an A. Either way, the valve cover is easy to pull off. Jim

504 · Jun 26, 2014

I broke a rocker arm on a 70 once,dead miss.

roaddevil49 · Jun 26, 2014

If using Champion plugs change them to anything but.

JRSutton · Jun 27, 2014

agree - no compression.

Most likely a stuck valve.

James Howell · Jun 27, 2014

You might also consider checking the valve springs.

Had one broken on one of our MTs and it only ran on one cylinder.

Mike M · Jun 27, 2014

A wet plug could be from antifreeze ?

Just a touch to the finger and then to the tongue and if it is sweet you got BIG problems.

greygoat · Jun 27, 2014

If you are using "Autolite" plugs, change to
a different brand !

Mike M Indiana · Jun 27, 2014

checked for a stuck valve today...not the problem. cleaned plug to right cyl even though it is a new plug. ran on two cyl for several minutes. pulled the plug, it was wet...not gas. will check for antifreeze tomorrow..thanks

john deere two cylinder

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