Misfire no codes

[Neil]

My car has been misfiring lately and when it started it was way intermittent and then it finally became a solid problem. My first step was to check the plugs and the number 5 and 6 were in a nice little bath of oil so I changed the valve cover gasket and turkey basted/shop towled the oil out. Hopefully that problem has been solved. Plugs were changed after that and i have bosch wires that were new at the beginning of summer this year. Once I got her all put together it still had the misfire problem. I've adjusted my TPS and I'm just about positive I did it right. Sometimes the misfire dies out and then the car starts to jerk when i give it any acceleration or load but while it is doing it's solid misfire it doesn't jerk like that at all it just has it's complete loss of power.

I'm going to start with cleaning the insides of my plug wires tonight but it would be great if I could get any input from you guys before then.. oh yeah I check my codes every time I try to fiddle with it and I havn't gotten any.

Thanks a million,
Neil

 

[BlackMKIII]

Now, for my evil (666th) post:

Did you change out the cap & rotor? Are you using NGK single platinum (V Power) plugs?

I always use NGK plugs and wires for a reason. Other brands of "tune-up" parts can cause problems.

Remember you need properly metered air, properly tuned fuel, and perfect spark. If any of those are out of spec, you get misfires. Hopefully you have the equipment to test all these things. If not, take it to a shop or find a friend who does. A TSRM (Toyota Service Repair Manual) is also a wise investment.

 

[AJ'S 88NA]

Did you check the timing? Gap your plugs

 

[cuel]

Could be the oil soaked plug boots are arching out. Amazing how rapidly oil eats up rubber boots, hoses, etc. By the way, those Bosch wires are junk. You might as well be using Duralast. I've had to many problems with both, and use neither any more. I prefer MSD wires myself, but others have had success with the NGK's. The stock Toyota wires are pretty good, as well. Again, this is a maybe, not the definite answer to your problem. I'd still get rid of those Bosch wires, though...

 

[thechori]

i had was using some unknown wires, my car idled fine. then i changed them to bosch's and some new NGK plugs and the car misfired at idle, i just redid the timing and that did the trick.