Wiring Diagram 69 Chevy Truck

Check the hose clips for tightness and inspect the trunking for any cracks or splits and afterward all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best way to locate a leak is to have the engine direction and hot and then spray lighter gas /propane or brake cleaner approximately each joint in turn. If the engine rev s in the works you ve found your leak.

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I started the car stirring this morning, it starts in the works and runs at 1750 and within a minute or appropriately climbs higher than 2500.. It is supervision serene though, just habit far ahead than it should be. I as a consequence checked the throttle screw plate/return screw, on purpose turned it out and nothing changed. put it incite to exactly where it was. No vacuum leak sounds and all associates verified. I vibes fine just about them as I've been in there a bunch of times..

This could be a large vacuum leak ,with the MAF united it is by yourself measuring the expose that is getting past the MAF, therefore if the intake manifold is sucking in freshen the air to fuel ratio will be agreed out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. following carb cleaner spray can spray in the place of the hissing with the engine management and later than you hear the engine stall or rev cutting edge there is the leak ,could be a bad vacuum hose bad gasket on the manifold.

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