Arctic Cat 400 Engine Diagram

Check the hose clips for tightness and inspect the trunking for any cracks or splits and in addition to all the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best exaggeration to locate a leak is to have the engine organization and warm and subsequently spray lighter gas /propane or brake cleaner on the subject of each joint in turn. If the engine rev s taking place you ve found your leak.

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I did re-check them tho. The master tech did extensive tests upon the let breathe flow meter and said it was good. afterward I unplug it and rule the motor, the car runs rude and at 850ish. I can unaided guess that my further rebuilt ecu has an issue, or the tps needs to be re-adjusted, or anyhow my maf has died in the midst of all this. I don't think the tps has that much govern in the swap of rpm though? I think it solitary adjusts it something like 1k..

This could be a large vacuum leak ,with the MAF associated it is lonely measuring the let breathe that is getting afterward the MAF, fittingly if the intake manifold is sucking in air the freshen 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. when carb cleaner spray spray in the place of the hissing past the engine paperwork and similar to you hear the engine stall or rev forward-looking there is the leak ,could be a bad vacuum hose bad gasket on the manifold.

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