Hey im a noob to the forum. Last week i bought an 89 accord for 600 bucks. Now my problem is its building up large amounts of pressure in the engine. I think it has bad rings since i replaced the pcv valve, but that shouldnt make it build up enough pressure to blow a hole in the valve cover gasket like it did today, or push oil out form under the oil cap. Im just wondering if its a clogged or pinched vacuum line or maybe a clog in the block. Or maybe thinking it could be a vacuum line hooked up incorrectly. Please help im not wanting to spend a fortune on it and am pretty handy. Ill probably replace the rings in the near future if thats the problem.

 

I meant i think it has bad rings because i replaced the pcv valve and its still puffing smoke out of the dipstick tube and from the oil cap hole in the valve cover.

 

you say it builds up preasure?are u sure the oil pump is workn?if it blew a rod?it just didnt blow a rod!there will be internal damage,u havent seen what kind of damage the engine has internal?the head, an block!im sorry to tell u but if u want that car to run $$$ will have to be spent or park it?there is no quick fix with your problem,thereis only 1 solution to ur problem?Rebuild it!good luck partner

 

Ok so if anybody has ever taken the pcv breather off, please help lol. What i mean by that is the black box between the pcv valve and the oil pan. I found the top left bolt but cant find the others. Also if this is clogged is there anyway to clean it or would i need to get another one from the honda dealership? oh and is the part the pcv valve sits into, part of the hose that goes into this box or is it seperate because mine was really brittle and just crumbled. If this isnt it then its either my compression or oil rings or both.

 

Carb or FI model?

I would do a comp check, leak down can't hurt either.

 

It is carb and i dont know how to do either, or what you mean lol. Sorry ive only owned older chevy trucks and I could do anything on them. this is my first import and it seems like im learning everything over again

 

Compression test - use a pressure gauge that's stuffed into a sparkplug hole while cranking the starter. You must have seen that with any kind of engine.

LeakDown test - Adapter fitting screws into sparkplug hole, use an air compressor & regulator to feed compressed air into the cylinder. Has pressure measurements but with the specific arrangement you're really measuring leakage out of the cylinder. And you can listen for where it leaks out (valves vs. rings vs. leaking into cooling-jacket).

 

ok cool, so im assuming i can just go into my local parts store and pick one of each of these up? on and the air one, is it just one piece what regualtes and measures it all in one? sorry never done this before or seen it done.

 

I've done compression tests on all kinds of cars way back to 72 Datsun. That one's easy.

I've never done a leak-down test but I think it's a slightly more involved tool including a regulator. The main advantage is it can help answer WHERE is it leaking to.