Question-------------------------
Followup To
Question -
This is a two part question:
Subject-1991 SR5 4/WD V-6 pick-up, with 200,000+ miles.
This truck will not pass inspection due to emmisions failure. Test show the #3 cylinder has only 10 psi compression.
Question #1-What would be the most cost effective way to find out what is causing this compression loss, and is it more realistic to consider repairing or replacing this engin?
Question #2-This problem occured the day my truck was at the garage for emmisions repaire after it failed the origional RI state inspection. My question to you would be, is there something a mechanic may adjust, in a attempt to repaire a minor problem and cause a major problem. This truck was running fine prior to going in for emmisions repair and now it seems as though the cost of correcting this problem may be more then replacing the truck all together?
Answer -
If indeed this problem happened after it was in the shop it may have something to do with what was done, I need to know exactly what the repair shop repaired that may possibly have caused this, please check the invoice of the repair order it should lisrt all the parts replaced, if any, and what labor operations were performed, this will help me make a diagnosis, in other words, I need more deatails and also any previous repair history.
You may want to consider taking the truck to another shop or the toyota dealer for another opinion.
Here is some more history on this truck, and what I can tell you about this current problem.
The only major engine work that was done on the truck was a recalled head gasket replacement about 100,000 miles ago.
As for this current problem the garage dines doing any work to this vehicle when it went in for emissions repair after the origonial inspection. There has been some debate about the truth of that claim but I have no way to prove that the mechanic caused this problem, although in my mind he had something to do with it.
The fact remains, now there is one cylinder with 10 psi and the truck will not pass inspection.
If you can tell me anything that a mechanic may adjust or touch incorrectly that may cause this problem it would also be of some assistance.
AnswerSince they won't tell you what exactly was done I have no way to help you because I have no idea what the repair shop did or did or did not do, the best advise I can give at this time is to get it out of that shop and have someone else diagnose the problem, I have absolutely no idea why the loss of compression may have happened without further information which the repair shop is obviously not going to disclose to you, without this information I can't help anymore.
