Didn't you replace the spider as noted by 2000.00 worth of injectors? How long was the engine run with sugar? It can ruin an engine. Has a compression test been done? Tank and lines flushed out? Is the service engine light on? Surging at lights is normally a vacuum leak, Get a can of spray gumout, start the car and spray around, pay attention to vacuum lines and manifold, if the idle changes, you found a leak. You want the engine running and spray on the outside but do direct the stream onto the hoses, if it is a vacuum leak, the engine idle will change speed, then you have detected a leak, repair the vacuum leak and see how it runs!
The other possibilty is the idle air control, it, s bolted to the side of the throttle body.
Also do not spray hot exhaust manifolds or pipes, it can cause a fire!
Monday, August 9th, 2010 AT 4:05 PM