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Old 09-22-2006, 01:24 PM   #1 (permalink)
22r
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22r noise

My 22r is doing some clicking noise... a bit of clicking noise at idle... and somtimes a BIG clicking noise at idle proportionnal to the engine speed... I think this clicking noise began after some 4500-5000rpm shiftings. It seems to be around the valve cover area... but maybe piston pins/ or piston slap? I checked the oil pressure when it's happened and it was at 1/8 of the original sr5 cluster gauge at idle. Do you think it's a too low oil pressure, or pistons? My compression is 190 all cylinders engine don't take oil, and.. oil level ok (10w40). Oh forget the most important thing... I adjusted the valves to specs 0.008 intake 0.012 ex... and it don't helped.

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Old 09-22-2006, 02:31 PM   #2 (permalink)
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Quote:
Originally Posted by 22r
My 22r is doing some clicking noise... a bit of clicking noise at idle... and somtimes a BIG clicking noise at idle proportionnal to the engine speed... I think this clicking noise began after some 4500-5000rpm shiftings. It seems to be around the valve cover area... but maybe piston pins/ or piston slap? I checked the oil pressure when it's happened and it was at 1/8 of the original sr5 cluster gauge at idle. Do you think it's a too low oil pressure, or pistons? My compression is 190 all cylinders engine don't take oil, and.. oil level ok (10w40). Oh forget the most important thing... I adjusted the valves to specs 0.008 intake 0.012 ex... and it don't helped.

Original motor or Reman? Check the timing chain guides?
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Old 09-22-2006, 04:35 PM   #3 (permalink)
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115k miles original engine, timing guides ok. Oil pump at this mileage, is it possible?
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Old 09-22-2006, 05:27 PM   #4 (permalink)
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Are you sure the valves are staying adjusted? have you tried adjusting them, run it and then pull it off and recheck them once it starts making the sound again?
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Old 09-22-2006, 05:48 PM   #5 (permalink)
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adjust your valves
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Old 09-22-2006, 08:30 PM   #6 (permalink)
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i adjusted the valves to specs very tight and hot. Immediately after adjustment it still make this sound. Oil pressure at 1/10-1/8 of sr5 cluster warm idle is enough?
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Old 09-23-2006, 11:40 AM   #7 (permalink)
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no clue what that exact measurement is BUT i'd assume thats not enough oil pressure. Go buy a cheap mechanical oil pressure gauge and see what it reads. I'f its not around 25 at idle and 50 while on the gas then you probably need a new oil pump.
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Old 09-24-2006, 09:08 AM   #8 (permalink)
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Quote:
Originally Posted by 22r
i adjusted the valves to specs very tight and hot. Immediately after adjustment it still make this sound. Oil pressure at 1/10-1/8 of sr5 cluster warm idle is enough?
There are several things the make a "click" in a 22R. Valve lash, t-chain guides, exhaust leak, spark plug wire, and...... the fuel pump!!
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Old 09-24-2006, 02:54 PM   #9 (permalink)
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It's a mechanical "click", not an exhaust leak fuel pump or something like that... maybe timing chain, but the guides are ok... I have a 8deg slack on my t-chain, i checked it by positionning the crank at 0deg turning counterclockwise, then began to turn it clockwise, at 8 deg the rotor begins to move, is 8 degrees is too much slack? It's on a 115k miles engine (never rebuilt, 20 years).

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Old 09-26-2006, 04:29 AM   #10 (permalink)
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It's a mechanical "click", not an exhaust leak fuel pump or something like that...
This doesn't sound like your problem, but just in case, I should have been more specific.... a bad or failing fuel pump in a 22R will click loudly (mechanical) and sound similar to a loose t-chain, or a loose rocker arm. I've had two fuel pumps on my 85 22R do this. The first time, it drove me nuts for about a week before I isolated the noise. Piston slap is usually very short and at cold starts. I'd recheck the valve lash and try 7/11.
8 degrees slack at the crank may be excessive.
Gnarls.

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