NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   2nd Generation Specific (https://www.nopistons.com/2nd-generation-specific-17/)
-   -   Cant Rev Past 6100 Rpms (https://www.nopistons.com/2nd-generation-specific-17/cant-rev-past-6100-rpms-16114/)

pengaru 04-23-2003 03:21 PM

check timing

j9fd3s 04-23-2003 04:20 PM

its possible that the secondary injectors dont come online for some reason, unlikely but possible



mike

pengaru 04-23-2003 04:24 PM


Originally Posted by j9fd3s' date='Apr 23 2003, 09:20 PM
its possible that the secondary injectors dont come online for some reason, unlikely but possible



mike

yeah but the secondary injectors have nothing to do with his idle...

j9fd3s 04-23-2003 04:29 PM


Originally Posted by pengaru' date='Apr 23 2003, 01:24 PM
[quote name='j9fd3s' date='Apr 23 2003, 09:20 PM'] its possible that the secondary injectors dont come online for some reason, unlikely but possible



mike

yeah but the secondary injectors have nothing to do with his idle... [/quote]

yeah, thats true



mike

75 Repu 04-23-2003 04:30 PM

Ahh, troubleshooting at its finest..

mockujin 04-23-2003 04:37 PM

If it was the secondary injectors, wouldnt i notice that at about 4k when they activate? And I also found out that my alt is bad, thats why it lopes and when it lopes all the idiot lights flash and the volt meter drops. Some guy told me that when his alt went bad he could rev past 3k could the alt cause this problem? And how do I check timing on a rotary engine? what is there to time besides ignition and how would adjust that?

pengaru 04-23-2003 04:37 PM

and yeah compression check is a must before you start pulling your hair out... if the results come back positive then you can justify going crazy.

j9fd3s 04-23-2003 04:41 PM


Originally Posted by mockujin' date='Apr 23 2003, 01:37 PM
If it was the secondary injectors, wouldnt i notice that at about 4k when they activate? And I also found out that my alt is bad, thats why it lopes and when it lopes all the idiot lights flash and the volt meter drops. Some guy told me that when his alt went bad he could rev past 3k could the alt cause this problem? And how do I check timing on a rotary engine? what is there to time besides ignition and how would adjust that?

well the ecu needs power to work right, and they dont like ow voltages. before you condemn your alternator, check all the battery/ alt connextions they get old/dirty and cause all kinds of wierd problems



mike

dcrasta 04-24-2003 03:09 PM

Def test the alternator. As far as the rev thing, my GSl=se would go past 6. Turned out it was a clogged cat/s I replace them with racing beat header, high flow Catco cat, Generic ebay can muffler. Now it revs freely.

mockujin 04-24-2003 03:52 PM


Originally Posted by dcrasta' date='Apr 24 2003, 12:09 PM
Def test the alternator. As far as the rev thing, my GSl=se would go past 6. Turned out it was a clogged cat/s I replace them with racing beat header, high flow Catco cat, Generic ebay can muffler. Now it revs freely.

When you couldnt rev past 6k did it feel like you were hitting a fuel cut? And like a pulsating jolt like you riding fuel cut?





I dont think compression is bad because it feels good like al the other NA Rx-7's I drove (including one rebuilt) up intill 5.5k.


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