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Member ![]() ![]() Group: Members Posts: 58 Joined: 11-June 23 From: Utah Member No.: 27,409 Region Association: Rocky Mountains ![]() ![]() |
Yesterday just before getting home I heard a click from the engine then again. It wasn't steady, just every little bit I would hear it. I could feel that I lost power and it even stalled once at a stop light. Since I was only a couple block from home I just keep going.
I found that cylinder 3 could only produce 20 lbs of compression. A leak down test was 22% with most air coming out of the intake. For reference the other cylinders were 100 to 105 compression and the leak down was 18% to 20% with air noticed just in the oil filler hole. I don't know how accurate my testing tools are since they are cheap ones I got from amazon and harbor freight. I took off of my valve cover for cylinders 3 and 4 and with cylinder 3 at TDC I have over 1/2 inch of play with both valves and the pushrods are of course way loose. I haven't removed the rockers to pull the pushrods out yet to see if they are bent. I will do that after I pulling the engine either tomorrow or this weekend. How screwed am I? Thoughts on best and worse case? Here's a video of my loose rocker Video of rockers |
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DRPHIL914 |
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Dr. Phil ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 5,769 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States ![]() ![]() |
I will check for that. That doesn't sound too bad unless the piston hit the valve and bent it. Unfortunately, it's probably best to start saving $$$$ for a pair of new cylinder heads and potentially a set of new P&C's. A dropped valve seat or broken valve will likely ruin the piston on #3. i agree its likely dropped valve seat,that #3 is the most common cylinder, it happened to me 2 years ago, and they dont always cause damage, mind didnt and i had my OEM heads sent out and rebuild with all new stuff, including upgraded new valve seats, new valves, guides springs etc. BUT you might be better off getting new head castings and ahve the same done to them. see what you have once you drop the motor . you can scope it , pull the plug and get an idea if thats the case but, you might as well drop the motor . Phil |
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