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post #21 of 30 (permalink) Old 01-31-2013, 03:13 PM
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Re: Engine bog

Left looks good, right is too rich. Replace them both. The one prob. Isnt burning it all (weak spark)
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post #22 of 30 (permalink) Old 01-31-2013, 03:25 PM
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Better do a seal test.
Start it up and spray some starting fluid behind the clutch [at the crank stub] and if it revs up, you have a bad seal.

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post #23 of 30 (permalink) Old 01-31-2013, 04:01 PM Thread Starter
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I sprayed some starter fluid as you suggested and the revs stayed the same, should I take it for a spin with different plugs?
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post #24 of 30 (permalink) Old 01-31-2013, 05:07 PM
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Re: Engine bog

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Originally Posted by crispyzombie View Post
I sprayed some starter fluid as you suggested and the revs stayed the same, should I take it for a spin with different plugs?
Take it for a spin with NEW plugs. Also make sure the plug cap has clean contacts and the wire is tight onto the coil.
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post #25 of 30 (permalink) Old 01-31-2013, 06:42 PM Thread Starter
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OK i just took it for another spin and same thing with the plugs, one fouled and one clean. It seems to run fine, but one thing i noticed was a sound kinda like sucking air that I'm pretty sure wasn't there before.
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post #26 of 30 (permalink) Old 01-31-2013, 08:09 PM
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Crank seal could be sucking air making that cylinder run lean
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post #27 of 30 (permalink) Old 01-31-2013, 10:30 PM Thread Starter
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I noticed there seems to be abit of sludge leaking from my exhaust gaskets, could an air leak there cause issues like this? Also what about a blown head gasket?
Thanks!
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post #28 of 30 (permalink) Old 02-03-2013, 01:15 PM
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Re: Engine bog

I also had some sludge coming out of my gaskets. I resealed them with high heat gasket silicone and REPLACED THE PLUGS!! It wasnt burning everything and was letting fuel/oil into the exaust
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post #29 of 30 (permalink) Old 02-18-2013, 02:09 PM Thread Starter
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OK i got the sled going well (finally), replaced intake and exhaust gaskets then i tried running it without the air box again... Turns out the airbox was clogging it up abit Has way more power and no bogging
Now i have a question regarding the temps the engine should run at. It has 2 rings that fit under the spark plugs to get the temps. I've had it read as high as 500f when i was pushing it, is that alright or too high?
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post #30 of 30 (permalink) Old 02-18-2013, 02:46 PM
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Head temp gauge!
That's about right, watch and see where it stays most of the time and if it starts climbing out of that range it's time for a cool down.

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