Vacuum Leak fixed! Still have buck at 4k+

[lcgtrplr]

Well i did it. I pulled the intake, cleaned the icv replaced the 4 way hose under the intake and replaced anything else that looked old. Before it wouldnt idle at all or just barely......now sounding pretty at 800. I sprayed some cleaner around all the hoses and no difference.

I thought that might fix my bucking that starts at approx 3k and anything over 4k is rough....when its not bucking over 4k it has hardly any power.

I did put in a new fuel filter. My plug wires look to be fairly old and show some cracking and i havnt checked the plugs so thats my next move.


Where is the best price on wires or should i go to COP and what is the price on that?

Any ideas on the bucking would be appreciated.  Thanks

[twinpop171]

The bucking could be the wires.  If they look old and cracked replace them.  They will probably look way worse after removal.

The best price I found on Bosch wires was EuroDepot for around $90 IIRC.
Definitely shop around for them because I got price quotes from $90-$240 for the same Bosch wires.

Good luck,Dan.

[lcgtrplr]

Found my problem. Vaccum leak was priority so i fixed that.....thought that vacuum leak could have been the cause of the bucking. Not So! So this morning i decided to start with the basics. The first plug looked great...slightly tan....electrode still very defined....every thing looked good and i was thinking no way this is my problem but went ahead and changed them out.  Every plug looked good and no signs of damage but that was my problem!  

I have pulled plugs out of cars that had the electrodes almost gone that still ran better than this car.


I guess with only 4 cyl there is less tolerance and anything will be magnified.

BTW champions were in the car. Have no idea how many miles on them but they did look rather newish.