Did you put a teaspoon of oil in the dead cylinders to see if the compression came up? If it does it's your rings.

 

are you gonna put the old fuel pump back in now, add the grime to the tank, and throw some dirt at the air cleaner since you know that's not the problem now?

 

Indeed I did today....5 and 7 came up. Can't be rings, truck burns no oil and you can smell/see no oil coming out the exhaust.

My uncle brought up a good point, could be a head gasket or cracked head. Debating if I should go yank the head now because I'm bored and restless or wait until daylight and run a leak down test on them first. Either way, it has to come off.

 

Already ahead of you

 

my exp has always been rings, my omni had a bad cylinder and it didnt smoke. My van had a bad cyinder and it didn't smoke, both were rings It's a loss of compression, therefore the oil is just enough to fill the gap and not enough to cause it to smoke. If you had a bad headgasket there would be h2o in you oil. As far as a cracked head, never had one or seen one on an engine. If it is a cracked head, might I suggest some magnum heads and misc amc valve train parts

 

well it already has magnum heads, seeing as how it's a magnum 318. However, it is an excuse to get shitty with a rebuild

 

oh shit I keep forgetting the year of your truck. Got way too much on my mind with work. Trust me it isn't your heads. Just cause you don't see smoke doesn't mean there isn't a fire. Back to the head subject, might I suggest a set of R/T heads

 

straight from the service manual:
page 3-31 #8
If a cylinder is unusually low, pour a tablespoon of oil through the spark plug hole and repeat compression test. If the compression comes up after adding the oil, it appears that the cylinder's pisron ring or bore are damaged or worn. If the pressure remains low, the valves may not be seating properly (a valve job is needed) , or the head gasket may be blown near that cylinder. If the compression in any 2 adjacent cylinders is low, and if the addition of oil doesn't help the compression, there is probably leakage past the head gasket. Oil and coolant in the combustion chamber can result from this problem. There may be evidence of water droplets on the engine dipstick when a head gasket has blown.


So your headgasket at 5 could have blown causing a pressure leakage between 3 and 5 and 7 could have bad rings or bore. Since you seem to want to believe you have a blown headgasket.

 

So my father says to me

I flat out don't believe there is no compression in those cylinders, I'm going to find my compression gauge. I said to him "well, I was standing there when Charlie ran the test"

So we proceed to run a check and find 160 across the board. Hmm, what the fuck. Must be fuel injectors says he. yanked the injectors from the manifold, and tested them. The three lame cylinders' injectors weren't spewing much fuel. Pulled them from the rail and found all sorts of shit clogging them up. Cleaned them out, replaced and viola. Truck runs beautifully.

Bastardized fuel injection

Oh well, now the injector o-rings are apparently old and worn so fuel pisses out onto the intake manifold.

Napa part # 2-12093 fuel injector service kit I have eight of them sitting on my desk and when I have time, I will re-ring them.

Funny thing is I paid $1.10 per "kit" at Napa. Jerry Ulm Dodge wanted $15 per "kit". Each kit contains two little rubber o-rings.

:doublebird: dealer

 

Well Hot Damn the REdNeck livith