Cyl #1 dead?

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audiocontr
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Location: Buffalo NY

Cyl #1 dead?

Post by audiocontr »

help me with my logic here. I have a miss with my 710 that I've always felt was the carbs. i pulled out my temp gun and fired on the headers. Cy; 1 was 140, cyl 2-4 were 540. So it looks like #1 isnt firing. Pulled plug, its black, but not full of crud at all. I cleaned it quickly and put it back in. Compression shows at higher than 120 and i have spark at the spark plug wire.

Has to be the #1 carb isnt supplying fuel correct? Clogged jet?
1973 712m
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
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4x4Pinz
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Re: Cyl #1 dead?

Post by 4x4Pinz »

sounds more like a bad plug or broken plug wire that happened to make contact when you moved it to check it.
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audiocontr
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Posts: 1868
Joined: Fri May 01, 2009 1:30 pm
Location: Buffalo NY

Re: Cyl #1 dead?

Post by audiocontr »

possibly a bad plug. Simple test there. Will do
1973 712m
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
Winter Beater
Posts: 119
Joined: Wed May 12, 2010 1:51 pm
Location: Denver, Colorado

Re: Cyl #1 dead?

Post by Winter Beater »

From experience either carb functioning alone will run the engine and get you out of trouble; so you can certainly rule out a Carb problem. I'd focus on plug, wire or distributor connection to #1 cyl.
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audiocontr
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Posts: 1868
Joined: Fri May 01, 2009 1:30 pm
Location: Buffalo NY

Re: Cyl #1 dead?

Post by audiocontr »

Yup, carb was fine. Dead spark plug was the culprit
1973 712m
1968 Haflinger
1965 Pathfinder
1978 GMC Palm Beach (Hey, its got 6 wheels!!)
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