Help Truck ran great one minute than....

[brockett1]

Hi, thanks for all the feedback hopefully we'll be able to get this thing runnig again. Ok, we pulled plugs cleaned them put them back and it did the same thing?

[DuckRyder]

It fouled 5 plugs again in like 5 minutes?

[brockett1]

yep, he cleaned them because they were covered with oil. Then put them back tried to start the truck still ran horribly pulled the plugs again and they had oil on them again.

[DuckRyder]

I'm sure you don't want to hear this (and may already know), but:

That is definitely not good...

I agree that a compression test is in order at this point.

Is there any indication that the intake manifold has been off of it recently? One thing that comes to mind that would pass that much oil is bad intake gaskets.

[brockett1]

Not sure if the intake manifold has been removed recently, but will go out and check that next. also will do compression test and get back to you about my findings.


Thanks

[fordman]

ok this noise. if the head is over oiling then you wouldnt think the noise would be from top valve train noise. but it could be. still if the push rods were bent or something let loose. the other noises like you are describing could be a numebr of things. messign around with cleaning plugs a second time isnt going to keep them clean. a compression test and or a leak down test may help determinbe if there is good compression or maybe bad or broken rings. since there isnt much in the way of your description it is hard to narrow this down in my mind. i would like to hear this noise. it could be the push rods bent for soem reason. what did the previous owner say about maintaince and or how long since the last tiem it was driven. what all did he say? maybe he gave a clue in a freudian way that we can understand and you may not have caught. people do that sometimes.

[brockett1]

It was parked for a while. The seller gave no clue as to any engine problems. The weird thing is it ran really good. the motor sounded tight. the carb stumbled a little when it was first started but we figured that was due to the time sitting and the cold weather. after it wormed up and the next day it didn't happen again. We were thinking in order to affect both sides of the heads at the same time that it had to be a more global cause. like oil pump or timing chain or cam. The sound starts out like a ticking like lifters then escalates to clatter. We are still looking into this we will keep you all informed.
Thanks

[sideoilerfe]

Please take some pictures. Remove both valve covers and take some good pics and post them here. A video on youtube might be helpful as well. It's hard to diagnose something without seeing or hearing it.

[Banjo]

You'll have to start eliminating the variables. fuel soaked plugs can look alot like oil soaked plugs. Being as it was 5 of them fouled and running rough/smoking, and it ran fine a day or two prior, I'm still leaning toward choke or carb. Does it have stock cable choke or electrical or vacuum/heat operated choke? and have you blocked the butterfly on top of the carb completely open (mechanically) to ensure it's not the choke staying on? I had a Edelbrock someone had "modified" I guess, as it ran so rich the car would smoke and nearly die at idle and low speeds and upon replacing it with a Holley all those conditions disappeared immediately. and, it would foul plugs too, so bad that the car couldn't even be jump started!
The biggest clue to me is that it ran fine 2 days and then acts odd. Either it jumped time or the carb is hosed up to cause such drastic changes and I have had 2 old cars, a Merc and a Chevy that "jumped" time. And, in the Merc case, it had a replaced timing chain and all we could figure is the distributor wasn't tightened down enough and I jumped on it hard (about 6 grand) and it happened. check your distributor hold down is it handtight? Can the distributor be moved back and forth by hand (shouldn't be). Is your choke blocked open so you can verify it's not choke? a stuck float in the carb can cause misery too. Carbs can be trouble free or lots of trouble and there's usually no in between, to me.

[fordman]

possible bent push rods from old varnished gas?

[petey156]

how would the old gas bend a push rod? a backfire?

[FORDification]

Varnished gas will get into the valve guide, seizing the valve, and the pushrod will bend trying to push the valve.

[brockett1]

Its Bent push rods. 4 on the passenger side and 2 on the driver side. I have 45 PSI oil pressure. I'm thinking that it has sticky valves from bad gas. any recommendations?

Thanks

[70_F100]

Pull the tank and clean it out really well. Replace the gas with fresh gas. Pour a can of Marvel Mystery Oil into a full tank of gas.

Lay a 2x4 or some type of wooden block on top of each valve and tap it pretty hard with a hammer to make sure the valves are free.

Put the engine back together, and with it running, slowly pour some Marvel Mystery Oil through the carburetor. It'll smoke like all get-out (read: don't do it in your garage, or the neighbors will call the fire department ), but that should lubricate the valves well.

The Marvel Mystery Oil in your gas will continue to lubricate the valve stems while you drive. You might even want to repeat that for another full tank, just to make sure.

[fordman]

when you pour that in the truck may try to die. pour slowly.