Oil out the dipstick tube
Thread Starter
Supreme Member
Joined: Mar 2005
Posts: 1,665
Likes: 3
From: Benzie, MI
Car: 91 rs
Engine: Blow through 383, 10 psi, xr288hr
Transmission: Manual th350 ATI 3000
Axle/Gears: 3.50 9"
Oil out the dipstick tube
My buddy just picked up a 305 tbi and it pukes oil out the top of the dipstick tube. Compression is 180-205. What else can we check?
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Joined: Dec 2005
Posts: 9,920
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From: 53.0907° N, 113.4695° W
Re: Oil out the dipstick tube
Check the PCV system. Unless it's working properly, cylinder blowby will increase crankcase pressure to the point where oil will be forced out anyplace it can.
Nice compression pressure by the way. Bit of a spread but it's good to see 200 psi.
Nice compression pressure by the way. Bit of a spread but it's good to see 200 psi.
Thread Starter
Supreme Member
Joined: Mar 2005
Posts: 1,665
Likes: 3
From: Benzie, MI
Car: 91 rs
Engine: Blow through 383, 10 psi, xr288hr
Transmission: Manual th350 ATI 3000
Axle/Gears: 3.50 9"
Re: Oil out the dipstick tube
There's a new breather on the passenger side, and a new pcv valve on the driver's.
Supreme Member
Joined: Dec 2005
Posts: 9,920
Likes: 885
From: 53.0907° N, 113.4695° W
Re: Oil out the dipstick tube
Other than checking that the PCV is working correctly (despite the presence of the breather and the valve) my only other suggestion is a leak down test. That'll determine if that nice high compression you have is overwhelming the PCV and causing your problem.
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