The worse problem(s) on a 300 inline 6
Mountain Pass
Joined: Nov 2015
Posts: 121
Likes: 5
I had a '94 4x4 with the 4.9 and here's the problems I had.
1. Distributor gear roll pin backed out and dropped the gear destroying the camshaft. Gave me reason to swap in comp cams bump stick.
2. Air injection manifold cracked at each cylinder, replaced manifold just to find the air pump didn't work so I deleted the whole system.
3. Could never get the timing to set correctly, even with the "plug" pulled it would always try to advance.
4. Endless EGR position sensor codes probably the fault of the new parts being outo f ohm range from the factory.
5. Rocker arms wearing through.
6. Intake leaks (many).
This was all after about 340k miles on the clock so I wasn't angry about it. Truck still runs and last I head it was over 400k.
1. Distributor gear roll pin backed out and dropped the gear destroying the camshaft. Gave me reason to swap in comp cams bump stick.
2. Air injection manifold cracked at each cylinder, replaced manifold just to find the air pump didn't work so I deleted the whole system.
3. Could never get the timing to set correctly, even with the "plug" pulled it would always try to advance.
4. Endless EGR position sensor codes probably the fault of the new parts being outo f ohm range from the factory.
5. Rocker arms wearing through.
6. Intake leaks (many).
This was all after about 340k miles on the clock so I wasn't angry about it. Truck still runs and last I head it was over 400k.
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Denver
1987 - 1996 F150 & Larger F-Series Trucks
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May 19, 2011 06:47 PM
