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Old 07-06-2014, 09:36 AM   #1
rattis OP
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Question Not fire

Hi all
I changed the jetting because I put in a SW7 ITG air filter.
The jets were changed according to instructions i also checked my valve clearances and put in new spark plugs.
Time to start up and it only runs on the rear cylinder and once in a blue moon fires up the front.
Please an easy step by step trouble shooting!
Rear carb diaphragm?
yours sincerely, depressed
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Old 07-06-2014, 10:35 AM   #2
Tha Rick
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Just because it is a new plug does not mean it is a good new plug. +check the gap. Is the cap seated on the plug?

Pinched fuel line? Did you remove the sock/rag that you put in the intake manifold to keep crap out? Carb not seating on the intake manifold correctly?
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Old 07-06-2014, 08:23 PM   #3
Sporting Wood
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Quote:
Originally Posted by Tha Rick View Post
Just because it is a new plug does not mean it is a good new plug. +check the gap. Is the cap seated on the plug?

Pinched fuel line? Did you remove the sock/rag that you put in the intake manifold to keep crap out? Carb not seating on the intake manifold correctly?
What he said. There are several things that could go wrong. I would first make sure the front plug boot is down all the way. They need to be forced pretty hard to click. Carbs will need some adjustment but that wouldn't keep it from starting. Even if you tore the diaphragm, lost the tiny leak jet in its flange, left out the spring (done that one), etc... it will still start and run the front cylinder. Pinched fuel line could be the culprit too. It'd would be just the one going into the front carb...
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