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sudden loss of power or so it feels?

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Old 11-10-16, 01:23 AM
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sudden loss of power or so it feels?

First off this is for my 88 Rx7 motor has 70k miles.

whenever i get on it, right above 4k I have this slight feel of power loss like im barely even moving. if i shift to another gear it still does the same thing.
I have replaced numerous things to try and troubleshoot this.

Starting at, Fuel filter, fuel pump, fuel lines and hardlines, along with my plugs and wires. I have replaced all of these in the past two months.
Not to sure what was done to the car before i got it, but im not trying to replace everything to solve one issue..

Thank you for any help in advance.
Old 11-10-16, 06:54 AM
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Sounds like the 5th/6th ports are seized up
Old 11-10-16, 10:27 AM
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I have been fearing this as the worst case scenario... lol
Old 11-10-16, 01:47 PM
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Worst case? Why? Its easy, theres 2 ways you can tackle it

Pour some MMO in the spark plug holes liberally and turn the engine over by hand for a week or so, and while doing that try moving your actuators by hand

If that doesn't do it, take the intake assembly off and free everything up that way

2nd option has better success rate
Old 11-10-16, 06:22 PM
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Originally Posted by SpeedyX7
I have been fearing this as the worst case scenario... lol
worst case scenario is it blows up and you have a big aerodynamic lawn ornament.
Old 11-10-16, 08:41 PM
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well this is true. im just going to take the intake off clean and paint the intake. thanks for the help guys.
Old 11-10-16, 08:45 PM
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get everything freed up and hopefully abolish that issue.
Old 11-12-16, 06:51 AM
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Have you thought about the 26 year old catalytic converter yet?
Old 11-13-16, 02:07 PM
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Doesnt have a cat converter

Last edited by SpeedyX7; 11-13-16 at 02:08 PM. Reason: Speedyx7
Old 11-17-16, 12:18 AM
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Originally Posted by SpeedyX7
Doesnt have a cat converter
so,the split air pipe for the aux ports are now hooked up to...what?...
Old 11-17-16, 03:10 PM
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Speedyx7

Pipe welded onto side of exhaust. by the racing beat presilencer
Old 11-18-16, 10:32 AM
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Engine, Not Motor

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Check the TPS. If it is unplugged, the car will fall flat at 4K RPM under throttle.
Old 11-19-16, 11:19 AM
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that would make sense. if its plugged in, could it be a bad TPS then?




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