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Old 06-25-2008, 08:05 AM   #11
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My moneys still on the balancer or flywheel etc

I've had 4 cylinder engines running on two before and they didn't vibrate they just sounded bad
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Old 06-25-2008, 06:20 PM   #12
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Just dropped her off at the Marina. I'll let you guys know how I make out. Hopefully something simple (and easy to fix)... but when is that ever the case!
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Old 06-26-2008, 09:21 PM   #13
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Default Diagnosis...

The word from the service department is that the choke was stuck, and that was causing the engine to run rough at idle... thus causing the engine to shake like it did. They adusted it, ran it up... reinspected, and took care of the shake. They tested it again later in the day, and it was running ugly again... on and off... so they think the carb needs to be rebuilt. Any thoughts on a rebuild, or should I look into getting a fresh new carb?
Thanks!
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Old 06-26-2008, 10:02 PM   #14
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have them replace the choke....a rebuild isn't necessary when it's just the choke......
the choke bolts onto the side of the carb..

SP
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Old 10-01-2008, 06:58 PM   #15
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Default Follow-up

Just a quick end of season follow-up... I ended up getting the carb rebuilt, which resolved the idle/engine shake issue for about 3 trips. Since then, I've experienced more than my share of "flooded carb" starting problems - one of which had me sitting at the dock at the ramp for about an hour before I could get started (thankfully I invested in a marine charger/starter!). By this point in the season I now have to perform a start-up ritual, or I can plan on sitting around at the ramp for a long time.
I wonder if this is the proper start up proceedure for everyone with a carb -
Prior to start:
Pump Throttle several times
Set throttle to full
Crank engine
Once engine starts pull throttle back to about 1800rpm for a couple minutes
Gradually pull throttle back to neutral position to idle engine
(Whole process usually takes about 5 minutes before engine will idle without stalling)

Any thoughts?
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Old 10-01-2008, 07:02 PM   #16
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well..when I had my 2455 bayliner sunbridge....i had to pump the throttle 3 times....set to 1/4 throttle...then start the engine which I had to let warm up or it would die....but it was the same....pump 3 times...and start....after that I could hit the throttle anytime during the weekend and it would fire right up.....

Sp
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Old 10-01-2008, 07:15 PM   #17
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Did you have to wait 10-15 minutes after it died to get it to fire up again? If I don't wait, it just prolongs the agony!
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Old 10-01-2008, 07:23 PM   #18
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nope...just started cranking...if it stalls and floods...just open the throttle full and crank....be prepared to pull the throttle back immediately so you don't over rev the engine...but if it's flooding ...then you need to get the carb float set properly......

SP
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Old 10-02-2008, 01:20 PM   #19
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Had the same problem with carbeb 5.7 bayliner 2855 even when warm had to have throttle fully open,only found all this out when i had to spend the night in york on the boat because i couldnt get it going again,got it going about 5mins before marina boat came to tow me back the next morning cost me $250 ops:

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Old 10-03-2008, 04:44 PM   #20
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That's terrible Ash! Sounds like the same scenario though... Do you recall what was wrong with the carb? As for me, Im leaning towards a bad choke, or float, but then again it could be a jetting issue as well - Im sure I'll find out $80 dollars later! (marina hourly rate)
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