Well since I have sold the car (just verbal, no money or title exchanged hands yet) I was doing a little spirited driving one nice evening when the car started missing really bad under throttle. No problem, figured a sprak plug wire had fallen of the distributor cap like it had done before. Pull over and sure enough it had. Put it back on and crank the car back over and it runs fine, but when I pulled out on the road and gave it a hard load it about made me eat the steering wheel....explanation; it was boosting and coming on fine, but when it got to around 3200rpm it started cutting out and backfiring and wouldn't rev. I left off the gas and easily got back on it with a very light load and it would rev as high as I want. But when I give it a hard throttle load (probably 40%+ throttle) it wants to cut out and not rev anymore.
So, I for some reason I thought I was losing spark. I put new plugs in it (other ones had probably 10k miles), new plug wires, and a new distributor cap. Now the car runs damn good, but still cuts out. I am going to regap the plugs, but I dont know what else this could be. Some people think it could be a fuel pressure regulator issue as this one is stock. Any suggestions?
This is a turbo KA by the way. But, not sure this problem is turbo related...
Modified by UncleBen at 6:21 PM 2/5/2008
s14 has issues
-
spooled240
- Posts: 6487
- Joined: Sat Jan 20, 2007 8:45 pm
- Car: kouki s14
Re: s14 has issues - cuts out under hard throttle load (UncleBen)
Also check for boost and vac leaks. Theres a " how to thread" on here on how to make a boost leak tester and how to test for it. Also how long have you had the turbo on the car? Did you install it youself and what is your setup? running a stock fuel pump is not a good thing to do.
