car_crazy_dude Posted January 24, 2009 Report Posted January 24, 2009 Hey guys, I'm having a weird problem with my 87' corolla and if you could offer some advice that would be great. The corolla runs a 4ac, which due to rough running recently got a carb rebuild. I am now tuning it and the idle was a bit erratic. So I disconnected the EGR system for now and that seems to have fixed the problem. When I went to set the timing the engine revs would jump incredibly when approaching the recommended 5 degrees, even after backing the idle speed, and fast idle speed right off. There is no troubleshooting description of this in the manual and I am quite stumped. :) Quote
slapper Posted January 24, 2009 Report Posted January 24, 2009 Only thing I can think of is maybe check the cam belt hasn't slipped a notch. cheers, slapper Quote
car_crazy_dude Posted January 24, 2009 Author Report Posted January 24, 2009 alrighty ill look into it. Thanks. Quote
car_crazy_dude Posted January 27, 2009 Author Report Posted January 27, 2009 Okay, I had a look and thats no problem. Though I forgot to mention one other symptom - when I try and rev the engine the revs rise and stay at a point. Even if the accelerator is lifted off completely. I'm at the point where I'm thinking of just either letting a mechanic have it, or just buying a newer, better car! Hehe. Your thoughts? Quote
slapper Posted January 28, 2009 Report Posted January 28, 2009 given the recent "carb-job", I'd be looking for an air leak. That would tally with the distributor twist peaking as well. cheers, Slappe Quote
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