Burned Valve
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Joined: Feb 2000
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Burned Valve
I've got a 302 that I pulled due to low compression on two cylinders. When I pulled the heads the intake valves on the low cylinder were very black, and the exhaust valves were very rusted. This is just as compared to all the other valves. Would this be caused by bad exhaust valves? Also, the exhaust manifold was cracked between these two cylinders for some time, and I understand that can burn a valve. Thanks!
Postmaster
Joined: Jun 1999
Posts: 2,719
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From: Lee's Summit MO
Burned Valve
I think you have your answer. I have a 1989 F-150 that still has the 302 with 156k. My exhaust manifold's are cracked on both sides. It has developed a big miss, at low rpms, and the 6th cylinder has low compression. The fuel injectors on that side are just pretty much shot. I have a 302 that's waiting to be rebuilt, I would like to find a 3.25" crank somewhere along the line.
Pastmaster's 1993 XLT 5.0 E40d 3.55LS Normal Cab/Long bed Loaded from the factory with aid of...MSd 6a ign/s.p. wires, blaster coil, Hypertech Chip, K&N filtercharger, Cat-back dual exhuast w/o mufflers, 3.5", echo tips, Accel distributor cap, Dark Mocha over light mocha. 5% Dark tint, Alpine Cd player/remote, Pioneer speakers.
toydestroyer1(No Email Addresses In Posts!)
Pastmaster's 1993 XLT 5.0 E40d 3.55LS Normal Cab/Long bed Loaded from the factory with aid of...MSd 6a ign/s.p. wires, blaster coil, Hypertech Chip, K&N filtercharger, Cat-back dual exhuast w/o mufflers, 3.5", echo tips, Accel distributor cap, Dark Mocha over light mocha. 5% Dark tint, Alpine Cd player/remote, Pioneer speakers.
toydestroyer1(No Email Addresses In Posts!)
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