Question about 1994 Toyota Pickup

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Number 3 cylinder is missing- changed plugs, plug wires and #3 injector--did not solve problem

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Then you have to check compression, and make sure engine is in good shape 160 psi max, 125 min.

Posted on Dec 31, 2010

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I have a 1994 Chevy s10 truck with a 4.3 liter - vin W. The problem Im having is number 2 cylinder and number 3 cylinder dont seem to be firing properly. Changed plug,wires,cap and rotor. Has spark, and...


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What is a cylinder 3 misfire


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double check plug wires to be sure they go to the right cylinders. After that i would check fuel injectors
You need a listening device and listen for metallic clicking sound. Bad injectors will be silent and they do cause the same miss

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It sounds like a bad sensor or a break in the wire to the injector

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1987 cressida missing


Start with testing the injectors for pulse. Get a NOID light they sell the at almost any auto parts store remove in get plug from injector and plug the noid light into plug look for constant steady (pulse)lighting of noid light. Check all six injector on your strait 6. If all is good remove parke plug wire on at a time from cap and look for increased shaking and less when it replaced(Make sure to use wire puller with rubber insulation to avoid being zapped by spark from coil) Note cylinder with no difference or change when wire is removed. Those would be the problem cylinders. Then get a compression guage and check all cylinders for compression by removing spark plugs and attaching guage to each cylinders, make a not of each cylinder's reading. NOTE THEY SHOULD NOT BE MORE THAN 10 PSI difference in cylinders. Make note of low compression cylinders if any. If compression is good all around spark plugs are good, good ignition wires and you have good pulse pattern from you noid light. The only other problem is BAD INJECTORS and those would be the ones that didn't change when you took off the wires. I have work on these old cressida alot my self. Good Luck contact me if you need more help and if I solve your problem leave me a FIX-YA comment.

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Miss on # 3 cylinder


Check the plug and plug wire to #3, if they are ok test the fuel injector and test the compression on that cylinder.

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Error code p0303 cylinder 3 misfire


po303 is misfire on number 3 cylinder. It could be a bad spark plug or wire, maybe a loose plug wire, could be alot of things. injector problem drop of water in fuel that happened to hit that cylinder. but most likely a plug misfired. I would clear the code and see if it happens again. If so give care a tune up.

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