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| RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections. |
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#1 |
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The quest for more torque
Join Date: Sep 2008
Location: Sheboygan, Wisconsin
Posts: 855
Rep Power: 18 ![]() |
A few additional pieces of info:
The engine idles rather smoothly for a dead face on a rotor, but revs very slowly (like it is running on one rotor). We unplugged each rotor in its turn. The engine sputtered and died if the front rotor was unplugged, but did try to stay running. The engine sputtered and died almost as fast when the rear rotor was unplugged (still trying to stay running). The engine would not start on either rotor alone. This goes against my previous experience with blown rotaries, when they would start and run and drive fine (except for extreme gutlessness and very hot exhaust). I guess I am not sure that this is an engine issue or if it is a fuel injection issue. It almost acts like it is running very rich or has very retarded timing. Maybe we can pull the exhaust manifold off and look at the apex seals, that will indicate if the engine is worth rebuilding.
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1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic) |
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#2 |
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now what?
Join Date: Jul 2009
Location: SE Wisconsin
Posts: 178
Rep Power: 17 ![]() |
youll have to let me know when youre free next. well have to get something going.
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1986 Rx7 coupe - arctic silver - sold aka - 20bforme |
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#3 |
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RCC Addict
Join Date: Mar 2008
Location: Honolulu, Hawaii USA
Posts: 1,813
Rep Power: 19 ![]() |
You need to try and do some basic troubleshooting then?
Eliminate ignition (spark) first, since this is the easiest. First, confirm all 4 spark plugs are firing. Then, confirm (with a timing gun) that they are firing at the proper moment. If ignition system looks good, move onto the fuel... I would swap the fuel injectors just as a test - does the problem change? Swap either front to back (primaries) or swap primaries for secondaries. Also, might want to check spray pattern from the primaries by tying the fuel injectors to the rail and crank the engine with the injectors out of their holes - helps to have a friend here. -Ted |
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