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06-29-2006, 10:05 PM | #1 |
72 fleetside longbed 350
Join Date: Feb 2006
Location: Ohio
Posts: 169
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Poss. Rear Main Seal leak. Engine comp. progress pic.
changed: power valve in holley 4 barrel, spark plugs/wires, air filter/valve covers, alternator, master cylinder, Intake, Battery, Radiator & heater core. So far I cant complain about the power this motor gives out. Im still tracking down one of the two oil leaks found, one of which is the timing cover. The other seems to be coming from the RMS hopefully its either the oil pan gasket, or the sending unit but I dont see it there either. Im using about a half a quart of oil for a 30 mile round trip. Oil only leaks when I run the motor and is a steady drip until minutes after shut off. The symptoms are likely leaning towards it being the RMS. Lets hope not
Last edited by xfsketch; 06-29-2006 at 10:08 PM. |
06-29-2006, 11:06 PM | #2 |
Registered User
Join Date: Feb 2005
Location: Carl Junction, Missouri
Posts: 2,061
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Re: Engine compartment its rough but making progress!
take a deep long look and clean it and then look some more. i assumed my RMS was leaking but it was just the oil pan. i say just the oil pan, i still havent fixed it. i took the oil pan off already and thought i did but it still leaked
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06-30-2006, 07:24 AM | #3 |
67-72 Addict!
Join Date: Feb 2002
Location: The TAX State!
Posts: 7,856
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Re: Engine compartment its rough but making progress!
Could it be your oil line fitting on the back of the intake?. I replaced mine this week. GM sells a 1 ounce bottle of UV leak detector that will show you the problem. Cost is about $8
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Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads |
06-30-2006, 07:28 AM | #4 |
Senior Member
Join Date: Sep 2004
Location: Terrell, TX
Posts: 1,967
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Re: Engine compartment its rough but making progress!
Also check the distributor gasket. The RMS is not that hard to replace, just takes raising the motor about 4.5" and a steady hand getting the pan back in.
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Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps. |
06-30-2006, 07:30 AM | #5 | |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: Poss. Rear Main Seal leak. Engine comp. progress pic.
Quote:
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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06-30-2006, 08:28 AM | #6 |
72 fleetside longbed 350
Join Date: Feb 2006
Location: Ohio
Posts: 169
|
Re: Engine compartment its rough but making progress!
All of you gave me some great advice I will further inspect everything noted this weekend and post my results. This motor was rebuilt 60,000 miles ago and I hadnt noticed the leak out of the flywheel cover until after I replaced the intake. But then again I hadnt driven it at all until recently either. If I cant find the leak in the areas you guys suggested or after tightening my oil pan. I will buy some of that dye and find it that way. Thanx again for all your help!
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