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My 1986 Firebird 2.8L V6 loses power while driving. I replaced the plugs, wires, cap, Mass air,?
I also cut off the exhaust, checked the Cat, checked the transmission. I was able to get the car to a top speed of about 70 on the interstate but going up hills it would slow to about 30. I also replaced all of the vacuum lines and did regain some of the power back. I can drive it around the block and it seems like I have the normal power there. After that, the headlights dim a little and then come back full brightness but I start to lose the acceleration. In Park, I can step on the gas and the motor revs with no hesitation and seems normal. Any ideas on this problem???
lack of fuel... check the fuel pressure, check the timing, and do a compression test.
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