one engine-4500 other 5000 ?
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one engine-4500 other 5000 ?
OK, my port engine had a ticking noise, Sounded like lifters or some valvetrain noise. Well my mechanic said run it for a few hours and see if it goes away. (this boat sat all last year). Well after a couple hours of running it did go away, but I can only get 4500 rpm out of that motor and my other motor is at 5000 rpm. Any ideas on whats going on? My cams idle pretty rough, so I cant even tell by listening if it is missing or not.
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Re: one engine-4500 other 5000 ?
Is the timing the same on both motors? I have 2 ignition modules on my boat just in case 1 goes out and just for the hell of it I tried the other 1 and I lost 300 rpms. I couldn't understand why until I notice 1 advanced at 22 degrees and the other advance 20 degrees. The 1 that advanced at 22 gave me 5000 rpm at WOT the other just gave me 4700 rpm. I would of never guess that 2 degrees there would be so much difference.
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Re: one engine-4500 other 5000 ?
Originally Posted by 95caliber
OK, my port engine had a ticking noise, Sounded like lifters or some valvetrain noise. Well my mechanic said run it for a few hours and see if it goes away. (this boat sat all last year). Well after a couple hours of running it did go away, but I can only get 4500 rpm out of that motor and my other motor is at 5000 rpm. Any ideas on whats going on? My cams idle pretty rough, so I cant even tell by listening if it is missing or not.
PULL A FEW PLUGS AND SEE IF THEY ARE WET IF YOU FOGGED THE MOTOR WHEN YOU PUT IT AWAY THE PLUGS
ARE NO GOOD.
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Re: one engine-4500 other 5000 ?
OK Engine sounds like it is missing and tick is still there but faint. Is the lifter collapsed? Would it be louder if it was collapsed or could it quiet down a little bit. Dont want to order lifters if I dont need them?
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Re: one engine-4500 other 5000 ?
Check compression. If you have problems with a lifter to the extent that you lose performance it will most likely affect compression. As a side note, the valve train does rattle quite a lot on these engines. Also when tou start up it may take a while for the oil to make its way up to the rockerarms. If the compression checks out you may want to look elsewhere.
#7
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Re: one engine-4500 other 5000 ?
Could be a lot of things causing it. Start with basics. Plugs, cap, rotor, and check timing.
Ticking could be a lifter, or anything else in the valve train. Could have a cam lobe going flat, bent pushrod, bad valve spring. I wouldn't start buying parts till you find out whats wrong.
Ticking could be a lifter, or anything else in the valve train. Could have a cam lobe going flat, bent pushrod, bad valve spring. I wouldn't start buying parts till you find out whats wrong.
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