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Rough running turbo - 89 Mitsu 1.6L DOHC

Ok HELP…I admit that I am stuck in my 1980’s and carb technology…

My son’s first car, recently donated by his aunt (after 5 years of sitting around) is running, but only after a new fuel pump, flushing the fuel tank and flushing the lines to the pump.

It idles very sporadically (800rpm to 1,700rpm) and rough, has very slow throttle response and will only hit 4,000rpm…not a smidge more. It acts like it has a rev limiter on it at 4,000… Hints anybody

Dan B

The fuel injectors might be gummed up and sticking.