ebuilt it, removed the cats and seems like timing is off? Help please
have been restoring a 2000 spyder from front to back. have pretty much removed and replaced every electrical component in the motor. ( except the computer and o2 sensors )
have had it on a hand held and made adjustments. seems like once we replace one item adjust the computer it will be decent for about a day and then
it looses power, gets louder like the timing is off, and when I pull up to a red light and stop I get an exhaust smell.
the idle fluctuates from 800 to 1000 . we just replaced the idle air motor as you could see the scoring on the inside of the old one.
ran good for a day and is back to smelling and running bad like the timing is off again.
we keep thinking we are getting an over fueling problem at this point. every time we replace anything we get it adjusted seems good for a bit and then it
starts to sound like the timing is off again and the smell returns. oh my god this has been a year project just on the motor.
Any suggestions would be so greatly appreciated !!! thanks steve
RepairPal Certified shops can diagnose and repair your 2000 Toyota MR2 Spyder. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Visual inspection of the spark plugs? What are they telling you? Do you have a scanner that can read live data (long & short-term fuel trim) , to start. Stop replacing parts. Check fuel pressure (with & without regulator vacuum line on) Re-check valve adjustment , physical belt timing and compression.Do you also have an 'old fashioned' manual vacuum guage? Using that at the right points can also tell a LOT.
