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engine wont start (mercruser 5.7L

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Old 08-30-2008, 08:47 PM
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Default engine wont start (mercruser 5.7L

Does any one know what to do to start my mercruser 5.7 L after winterizing.
I have done the following:
1. replaced the fuel in ~ 90% of the tank
2. removed and cleaned all eight spark plugs and there is a spark while the starter is cranking
3. removed and cleaned the carburetor it is back in place and I can see two streams of gas shooting down into the both Barrels
I still can not start the engine, knowing that I did not change any original adjustments. Last October when I bought it, it was working but now there is gas coming in and there is a spark but it just does not work.
Please help!
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Old 08-30-2008, 10:30 PM
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Do you have a kill switch, if so is it hooked up? No I am not kidding or being a jerk.....It happens to most of us at one time or another.
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Old 08-30-2008, 10:43 PM
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Pump the throttle three times, crank for 3 seconds with throttle closed , pump 3 more times,crank for 3 seconds in idle positon. Continue till it fires. It may take 3 or 4 tries.

By the way spring came and went.

Last edited by MOBILEMERCMAN; 08-30-2008 at 10:46 PM.
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Old 08-30-2008, 11:03 PM
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did you check for spark at the plug(actually using plug)? if not replace plugs. cleaning most times is not enough
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Old 08-30-2008, 11:19 PM
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open it up to 1/4 throttle and crank for 5 seconds at a time untill it starts.Also put new plugs in.
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Old 08-30-2008, 11:39 PM
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Originally Posted by orthos1
Do you have a kill switch, if so is it hooked up? No I am not kidding or being a jerk.....It happens to most of us at one time or another.
kill switch is up, if it was on, there would be no spark when I try to start the motor, right?
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Old 08-30-2008, 11:40 PM
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Originally Posted by blkhorse
did you check for spark at the plug(actually using plug)? if not replace plugs. cleaning most times is not enough
yes sir
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Old 08-30-2008, 11:58 PM
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Do you have spark?
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Old 08-31-2008, 12:40 AM
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if you fogged the hell out of it, pull the plugs, replace them, crank, pull nclean the plugs repeat a couple times, replace filter/seperater
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Old 08-31-2008, 01:38 AM
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Originally Posted by x7734x
Do you have spark?
Yes I do have spark and gas shooting in
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