2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

TPS adjustment screw?

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Old Oct 11, 2010 | 03:51 PM
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87_RX7_fc3s's Avatar
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OneThreeRotary
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From: Vermont
TPS adjustment screw?

I adjusted an adjustment screw on the throttle body (facing out towards the front of the car), In order to get the TPS to 20% for setting idle on my RTEK.

Is this for TPS adjustment or does it effect the oil injection?

I test drove the car and all of a sudden I noticed the car was burning a little more oil.
I can smell the oil burning hovering over the turbo manifold...

If this is not oil injection related, could I have a bigger problem?
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Old Oct 11, 2010 | 03:59 PM
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From: tulsa,ok.
The screw shrouded within the spring on the throttle linkage is for the TPS. The throttle linkage has a rod connected to it that leads down to the Oil Metering pump and this helps to control the oil injected into the engine. I don't have a turbo so you'll need to rely on someone else for information pertaining to how the turbo receives oil.
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Old Oct 11, 2010 | 04:03 PM
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OneThreeRotary
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Okay... Then It was for the TPS.

It seems like the oil is at lower rpms after returning from a rev up.... with and with out Boost.
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Old Oct 11, 2010 | 04:15 PM
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From: tulsa,ok.
Originally Posted by 87_RX7_fc3s
Okay... Then It was for the TPS.

It seems like the oil is at lower rpms after returning from a rev up.... with and with out Boost.
The oil pressure is a function of the throttle/rpm. If the idle rpm is lower after adjustment then the oil pressure should be a bit lower to a point. For those who have high idles their oil pressure will also be higher as well.
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Old Oct 11, 2010 | 04:30 PM
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OneThreeRotary
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Right...

this still doesn't explain an increase of smoke... if anything there should be less smoke because I took the idle down from 1000rpms to about 850rpms...right?
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Old Oct 11, 2010 | 05:24 PM
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rotorhead
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From: cold
https://www.rx7club.com/single-turbo-rx-7s-23/turbocharger-oil-seal-leakage-explained-727476/ read this about turbo oil seals
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Old Oct 11, 2010 | 06:11 PM
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OneThreeRotary
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Okay that makes sense...

but the car has a BNR stage 3 turbo that has only had up wards of twenty starts and maybe 3miles on it....

Is it likely to be leaking this soon?
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