WildBill Posted August 1, 2009 Share Posted August 1, 2009 You get a compression test gauge kit, and a cylinder leakdown tester. Remove all six spark plugs, insert the correct compression test adapter into each spark plug hole, one at a time, hold the throttle wide open, crank the engine and watch the needle on the gauge, watch it jump up about 5-6 times as you crank it, stop cranking and read the gauge. This is called a dry compression test. Write down the results for each cylinder as you check them. If there are large variations between the cylinders, you can put a few squirts of oil down each plug hole, and redo the whole test. This is a "wet" compression test. If any cylinders that were a lot lower than the others come up more even with the "wet" test, then that cylinder was either severely washed down with fuel from a bad injector/lack of spark, or the rings/cylinder bore is worn out and needs a rebuild. With the leakdown tester, you insert the adapter into each spark plug hole just like with the compression tester, but instead of cranking the engine over, you apply compressed air to the adapter (follow the instructions) and it will tell you how much cylinder pressure is leaking out each cylinder (test each cylinder). Leakdown could be past the rings, or past either the intake or exhaust valve. This stuff is all pretty easy to do, but it sounds like you are very new to engine mechanicals. I would recommend a visit to you local library to get some books on basic engine concepts, and pick up a service manual for your car. A lot of us don't mind helping out, but you have to show a little initiative and effort on your part - it's ok to be a sponge, but not to be a leech 8) Good luck with your car. 1 Quote Link to comment Share on other sites More sharing options...
omar_munoz123 Posted August 1, 2009 Author Share Posted August 1, 2009 thanks for the help i'll be sure to do these tests and post them on here... Quote Link to comment Share on other sites More sharing options...
kiwi303 Posted August 2, 2009 Share Posted August 2, 2009 You can usually hire the testers from a good parts store and do them in the parking lot, or many garages will rent theirs out. on the other hand a compression tester is only about $30 NZD, about $15 USD for a basic one. Quote Link to comment Share on other sites More sharing options...
Challenger Posted August 3, 2009 Share Posted August 3, 2009 As mentioned check out your fuel system first. Also if there has been fuel leaking down through the cylinders theres a good chance most of the oil on the walls has been washed off. Dont tear your engine apart if your not positive its an internal issue. Also if you dont know what the rings are, you shouldnt be trying to repalce them. Quote Link to comment Share on other sites More sharing options...
Pharaohabq Posted August 3, 2009 Share Posted August 3, 2009 Well. it IS possible to replace the rings with the engine still in the car. You'd need to remove the oil pan and head. Send the head out to be ground and have the valves reseated, along with the new seals. (get the type that work w/ unleaded gas. Anyway, with the pan off and the head off, you can unbolt the rods and pop them out the top, then re hone the cylinders and replace rings, then put it all together with a new chain and bearings and boom, you're all set. it's just about 10 times easier to do all that on an engine stand and cleaner too. Phar Quote Link to comment Share on other sites More sharing options...
rucus01 Posted August 3, 2009 Share Posted August 3, 2009 How does this guy even know he needs a rebuild? His engine might smoke for alot of reasons. Head gasket leaking valve seals to name a few. You guys are really quick to tell this guy to rebuild his engine. He needs to fix the fueling problem and then do a compression check/leakdown test to see where his engine actually is. According to what you guys are saying every one should rebuild the engine every time there car doesnt run right. I tried that for a while it gets real expensive Quote Link to comment Share on other sites More sharing options...
omar_munoz123 Posted August 4, 2009 Author Share Posted August 4, 2009 Jeffer949 was right switching to carbs solved the problem whew thought i had to do a rebuild but thanks everybody for the advice it was all really appreciated Quote Link to comment Share on other sites More sharing options...
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