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merc 5.7L ski wont start

hi, the engine will turn over and if i spray carb cleaner in it will run for a few seconds, so i replaced fuel pump (OEM $200 from local dealer
argon
Jun 18
2006
Possibly the carb is plugged up from old gas plugging off the needle valve?

or theres something restricting the fuel line from the carb tot he tank

argon wrote:

tschnautz
Jun 18
what do you think i should do? should i unhook the line from the fuel pump to the carb and blow air through it? how should i unstick the needle value? (the carb is a almost new Holley)... argon
Jun 18
Yes.

What I would do is disconnect the coil or electronic ignition so you don't ahve a chance of sparks. Then disconnect the fuel line that attach's to the inlet side of the fuel pump and see if you have a good natural fuel flow. if not? then there's a restriction in the line. If that's the case, then use moderate pressure with an air gun and see if you can blow back the clog. If it is stipped up, it should break loose rather easily.

if the line is free, then hook back up to the pump and disconnect the fuel line to the filter, that is, assuming you have the filter between the pump and the carb. Cycle the engine over a few times and see if you have a generous supply of fuel spurting from the outlet side of the pump, or filter. reconnect, THEN investgate the Carb.

I really don't know much about Carbs, but you might look in Google. Theres lots of sites that could probably help.

http://www.google.com/search?hl=en&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=troubleshooting+Holley+carburetor&spell=1

tschnautz
Jun 18
thanks, much appreciate the help! argon
Jun 18
Just thought of another thing. If you DO suspect the carb, then something easier wwould be to call Van's Electric in Indianapolis. They used to be called Vans Carburetor and Electric But still do tons of carb work. They've also been a Holley dealer since the early 60's.

Call 1-800-428-4049

Ask for Steve Kelshaw

Be prepared with all your info. Application, and carb number[s]

They will give you good advice and won't steer you wrong.

Good luck!

tschnautz
Jun 19
   

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