jump150

Here I thought I was going to have to spend the next couple weeks trying to troubleshoot why after changing to new FIC injectors my 91 developed a stumble once warm. I was looking for vacuum leaks, thinking maybe one of the new injectors was bad. Guessing that maybe a coil had gone bad.. MAP sensor failed. but after reading all the threads and possible causes, I went out and stared at the engine compartment checked and rechecked the driver side, all good. Checked the passenger side. all was looking in order until I got to the #8 spark plug boot sticking over an inch out of the hole. I knew I had used dialectric grease in all the boots, but apparently not pushing #8 plug wire down the last inch and snapping into place could be the cause. Took her for a spin right after and all is well. Sometimes its the little things

Don

FASTAZU

Yep, also you may want to put some dielectric grease on the boots.