22re Piston hitting spark plug? Help
#1
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22re Piston hitting spark plug? Help
So, my '85 4runner started to make a nasty tick last week. I used the good ol long screwdriver to the ear trick to try and locate the problem. Definitely the last piston (back of the engine next to firewall). So I reached out and fiddled with the spark plug wire. The ticking softened, and while I was holding the plug, I could feel it "bouncing". I'm guessing the piston is hitting the spark plug. That's the only thing I can think of, but maybe it's something else? If it is the piston hitting spark plug, what does this mean as far as fixing it? Are there any threads here that can walk me through what needs to be done?
Thanks
Evan
Thanks
Evan
#3
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Join Date: Aug 2012
Location: Orange County, CA
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I highly doubt that your piston is hitting the spark plug. The 22RE is known to tick badly when the valve cover is snugged down too tightly. Any chance you did that recently?
#4
Registered User
You might be due for a valve adjustment. Also, the valve cover should only be torqued to 52 in.-lbs. That's inches, so that means about 4 1/2 lbs of torque if you use a torque wrench. Basically, just tighter than hand tightening.
#7
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Thread Starter
Thanks NothingBetter for the sage advice. Begin simple. I was jumping to the worst conclusion because the tick was so nasty sounding. Cam tom was right on. The plug had backed out a bit, so it eas rattling and ticking. It was loose enough that a 5/8 socket plug was able to unscrew it! Anyway, I pulled the plug out. It looks like oil was leaking around the plug. I put the plug back in and tightened it. Now the engine idles poorly and there is a "hissing" sound. Could it be that running the engine with a loose spark plug ruined the seals around the plug? I have videos I'm working on uploading so you can hear the problem.
Appreciate the help and everyone's generosity.
Appreciate the help and everyone's generosity.
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#9
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Sorry to bother everyone with such a simple problem, but your answers and advice really helped out.
Thanks,
EVars
#10
Registered User
Just want to give a final update and bring some closure to this thread. Wyoming9, replacing spark plugs was my going to be my next step. I'm not sure why the old plug wasn't sealing, but a new plug fixed the problem. No sound clicking or chattering or hissing. After 200,000 miles, the 22re purrs. It really is an amazing thing.
Sorry to bother everyone with such a simple problem, but your answers and advice really helped out.
Thanks,
EVars
Sorry to bother everyone with such a simple problem, but your answers and advice really helped out.
Thanks,
EVars
Better to be safe than sorry! Glad it was a simple fix!
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88runnergomas
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07-09-2015 01:12 PM