Question about 1994 Toyota Pickup

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I have a 1993 V6 toyota pickup with 164,000 miles. Cylinder #6 has zero compression. can I drive it with just 5 cylinders without causing more damage or is it worth $1300 to get it fixed?

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  • newing1 Apr 07, 2011

    my mechanic disconnected the fuel injector so fuel would not be in that cylinder. $1300 would include replacing the head (i think) with a used 3L V6 from a '94 four-runner and a timing belt replacement (he hears a chirp from the timing belt and figured he would replace it while he is in there??)

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If you have zero compression, chances are that your piston rings on the #6 cylinder are broken or severely worn, and it is only a matter of time before they break apart, destroy the #6 cylinder, and eventually cause piston failure, which will destroy your engine. Also, even without compression, the cylinder will still be receiving fuel and the spark plug will be trying to ignite it every cycle. This means that gasoline and exhaust will be getting into your oil and helping to destroy the 5 cylinders you have left.

If your truck is otherwise in good shape, it may be worth fixing... a call that you have to decide yourself. Just remember- every mile you drive it right now is causing more damage. 164K is allot of miles and there is no guarantee that something else will not go wrong, so it is a tough call. You need to also consider that if #6 is bad now, what other cylinders are facing ring failure? How much more would it cost for a complete top end rebuild?

You should look around and see what a similar truck sells for in your area. If you can find one with half the mileage for $1300, you have your answer.
Good Luck, and Thank You for using FixYa!

Posted on Apr 07, 2011

  • Victor Albright Apr 07, 2011

    It might be worth the fix then, but that is your call. If it was my truck and it has been very good to me, I might go ahead... tough choice. Glad to hear your mechanic is on the ball enough to shut down that injector! He must have some input for you, and you should listen.....

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Depending on what the $1300 covers, then this is likely a great price. You can get away with it for a short time, but it will damage other components and require a total rebuild instead of just the re-ring job / head rebuild. This is not a minor problem, this needs to be addressed immediately. You are likely burning excessive amounts of oil and/or "washing" that cylinder with fuel (solvent) removing all the lubrication for the moving parts in that cylinder.

Posted on Apr 07, 2011

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