Mazda Rx7

MAZDA RX7
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GOLDENSPIDER
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I have a 1985 Mazda RX-7 with a 12A Rotary, 173k miles. Had a problem with my car on the highway, my engine would slow down on its own when I reached about 80 mph. I sprayed the carb with carb cleaner and replaced the vacuum lines and a few I was missing. Now my engine bogs down at about 4500rpm on each gear and if I try to floor it, my car shakes and eventually slows to a stop. Been stuck trying to fix this several times on the side of the highway. Not sure what I should do, please help me out.
Apr 23, 2007 at 4:05 AM
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PETEDELOREY
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[quote:6a23009981="Goldenspider"]I have a 1985 Mazda RX-7 with a 12A Rotary, 173k miles. Had a problem with my car on the highway, my engine would slow down on its own when I reached about 80 mph. I sprayed the carb with carb cleaner and replaced the vacuum lines and a few I was missing. Now my engine bogs down at about 4500rpm on each gear and if I try to floor it, my car shakes and eventually slows to a stop. Been stuck trying to fix this several times on the side of the highway. Not sure what I should do, please help me out.[/quote:6a23009981]

Change your fuel filter. It maybe be restricting your fuel only enough to bog it down at high rpms.
Dec 11, 2007 at 6:35 PM
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