Engine Blow by - Engine Troubleshooting


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Engine Blow by

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Auto Repair Home>> Automotive Repair>> Engine Troubleshooting

BarryLuft
New User

Jul 1, 2010, 1:07 PM

Post #1 of 5 (2293 views)

Engine Blow by	Sign In

I bought a rebuilt Toyota 22R engine for my Jet boat. Runs with a slight miss, and twice has blown the valve cover gasket out and sprayed all the engine oil out over the engine compartment.

What could be the cause of this. I am fairly mechanical but don't have much experience inside an engine.

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 1, 2010, 2:00 PM

Post #2 of 5 (2273 views)

Re: Engine Blow by	Sign In

Too much blowby past the rings,................ bad PCV valve..........

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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

Sidom
Veteran / Moderator
Sidom profile image

Jul 1, 2010, 2:11 PM

Post #3 of 5 (2266 views)

Re: Engine Blow by	Sign In

My thoughts exactly.... Since there is a miss, it might no be a bad idea to do a compression test

BarryLuft
New User

Jul 1, 2010, 2:14 PM

Post #4 of 5 (2265 views)

Re: Engine Blow by	Sign In

Thank you Hammertime. I figured it might be a stuck valve, but as I said my experience inside engines is weak, so rings sounds reasonable.

Second question. This engine was supposedly rebuilt a couple of years ago by a mechanic...... I haven't ran it much, would it take time for the rings to seat to stop this and how long does that take?

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 1, 2010, 2:45 PM

Post #5 of 5 (2259 views)

Re: Engine Blow by	Sign In

I would bet the rebuild was more of the cause than the solution. He probably just slapped rings into cylinders that needed boring.

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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

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