Coleman Powermate 6250 10hp Generator Logo
Bill Ottewill Posted on Aug 24, 2012
Answered by a Fixya Expert

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Generator Won't start

Hurricane threatening our area so I got the 5 year old Coleman out of storage (hasn't been run in about 4 yrs). Drained the old gas, checked the oil, refueled and tried to start it; no luck. Pulled the spark plug, it looked ok and I could smell fuel in the cylinder, tried again to start; nothing. Can't find the manual for correct spark plug gap. Would appreciate any trouble shooting tips. Thanks, Bill

1 Answer

Brad

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  • Posted on Aug 24, 2012
Brad
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Gap the plug at .030 What is most likely the main problem is whatever gas sat in the carb. Even with fresh gas there will be some old gas still in the float bowl. You may be able to drain the bowl and be OK but I have a feeling that the carb will need to come off and be disassembled and cleaned properly. You can try spraying carb cleaner (I dislike starting fluid as it is too volatile and carb cleaner does just as well in this instance) into the carb/intake. Remove the air filter, open the choke, and spray the carb cleaner in through that way if possible. You can actually keep an engine running by spraying with short bursts. Even by just spraying once you should be able to get the engine to start. If it does start but then will not stay running without spraying more into the engine then it is a carb problem.

4 Related Answers

Anonymous

  • 1167 Answers
  • Posted on Oct 09, 2009

SOURCE: coleman electric 4 hp compressor was running and stopped will no

ok maybe a fuse blown or an overload switch tripped somewhere on the motor casing will be the overload have a look buddy get back to me with results

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Anonymous

  • 1 Answer
  • Posted on Oct 21, 2009

SOURCE: coleman air compressor was making unusual smells,

check for oil level (if applicable)
check free running without the belt
check the motor for overheating

Anonymous

  • 169 Answers
  • Posted on Jan 28, 2010

SOURCE: Installing a Coleman/Sanborn L6506016

send me a photo of the compressor, need to see the front view, and if possible the motor name plate. send it to my business e-mail [email protected] and I will see what I can do for you to get you what you need to do it correctly.

Anonymous

  • 98 Answers
  • Posted on Feb 21, 2010

SOURCE: Compressor pressure only to 60 lb psi and no more

not sure but it sounds like the piston ring is worn out or you might have a bad valve.
p.s. its not your typical valve like in a car.

is it a wet compressor, check the oil.

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