2000 Mazda 626 Q&A

2000 Mazda 626 Question: what would cause idle to variate 5 to 800 rpms

almost like a misfire ,but runs perfect on road,I just put in plugs and cleaned injection -
Answer 1
There are several other possible causes. coil packs, low fuel pressure , intake vacume leaks. If you still can not find the issue give us a call. -