ford f150 has massive oil blow by

[Ladman]

I have a 1993 f150 with a 5.0. I have a lot of oil blow by going on. I put in 20 50w oil holding it would stop but it did not. What could be causeing this? The oil is doing. Threw the vapor tube and into the air cleaner. I thought it might be the piston rings, but there is too much oil going by for it to be that I think.

 

[Ladman]

dosent anyone have any info that could help?

 

[towcat]

how many miles are on the truck?
it's either rings being washed down from overfueling at idle or a hole in the piston. the second would be directly linked to a very rough idle that won't go away.

 

[tknomaj]

check pcv if stuck will cause this problem

 

[1dieselman]

Does the engine run smooth or rough? About the only thing that will cause a lot of blow by is bad rings, cracked piston, or hole in piston. I would start pulling spark plugs and see if any have a lot of oil deposit's on them. How much oil are you using?

 

[IDIeselman]

check pcv if stuck will cause this problem

What he said!

 

[NJKen]

The 302 has a tendancey to carbon up the PCV port if you where slightly less than vigilant about oil changes. Get to the PCV Valve and pull it out. Start the engine up and stick your finger on the bottom of the valve. It should suck like mad. If not, start looking for the clog.
Ken