Pressure blew cam seal - Toyota Nation Forum : Toyota Car and Truck Forums

just_ee · 06-20-2011, 09:07 PM

I have a 1991 ST. Recently the timing belt stripped some teeth. I changed the belt. While I was in there decided to change the water pump, cam seal, crank seal, valve cover gasket, spark plug seals, etc. The next day the cam seal blew and I began losing alot of oil.
Wondering if anyone has any ideas about why this happened. I figure I now need to change the pcv valve, but still curious if the major pressure change could be something else...

Bitter · 06-20-2011, 10:41 PM

Probably didn't get the seal installed just right.

***MR2Jedi*** · 06-20-2011, 10:54 PM

^ Strong possibility. I would also check to make sure the valve cover vent tube is not obstructed.

just_ee · 06-23-2011, 05:05 PM

I changed the cam seal (again), pcv & vacuum line. Blew the cam seal again. At least thats what it looks like. Too disgusted to look for a day or two...

z3n · 06-30-2011, 02:43 AM

worst comes to worst, it might be a broken ringland. my friends alltrac kept on blowing cam seals even after having them replaced numerous times. do a compression test to see what your numbers are. my friends numbers didn't come out to well..

Pineapple · 07-04-2011, 12:05 AM

The PVC valve is alot easier to blow then cam seal. You need to hammer the seal in. Also the dip stick will blow out first also.

Ace2424 · 07-08-2011, 10:36 PM

Did you axle grease the seal before install? If you don't, the camshaft will rip right through that sucker.