Ideas of what is wrong :(
Hello guys and gals,
So I have a 1989 Mazda Rx7 T2 with the first Modular M1200 installed on it. The issue I am having now on first start up, on the same engine I used prior to the M1200 install, is that it is blowing a substantial amount of white smoke out from the downpipe, and exhaust. My wideband has not been able to read proper air/fuel ratios given that it hasnt been able to warm up, but it ranges from what we glanced at around 12-16. Here is what is done to the car so far to perhaps give you an idea: 1) front mount intercooler 2) smart coils 3) complete emissions blockoff 4) omp blockoff 5) protek R premix 6) 10 40 oil 7) some intake pipe 8) koyo radiator 9) leash electronics board 10) m1200 modular ecu 11) greddy comp tube 12) innovate mtxl plus wideband 13) stock 550cc injectors 14) walbro fuel pump 15) 3" downpipe to 3.5" exhaust (no cats/emission stuff) 16) tauras fan 17) custom harness 18) racing beat oil cooler lines w/ stock oil cooler 19) custom spark plug wires 20) braided delivery line for turbo So now when we initially started it up we did not have as bad of smoke as it does now. I can crank it with the ecu disconnected and it will not smoke whatsoever. We had the issue of keeping it running to do timing and I would need to tap the throttle to keep it running properly. Shortly thereafter of me trying to keep it running and then buddy trying to correct timing smoke started pouring out of the engine bay and exhaust and literally filled my entire garage. I would like to have ideas or suggestions of what it could be or what I should do to fix this issue. The car was sitting 3-4 weeks prior to install and recent start. Here is what I have heard it could be: -leaky injector -bad turbo seal -bad coolant seal -oil issue I will post pics of what it looks like once my phone is done updating. Thanks in advance. -Nick |
Only thing I know of that makes rotary engines blow white smoke is bad water jacket seals. Probably not what you wanted to hear.
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have you pulled your spark plugs out and checks for signs of water?
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Originally Posted by Fuhnortoner
(Post 12203955)
Only thing I know of that makes rotary engines blow white smoke is bad water jacket seals. Probably not what you wanted to hear.
i started the car without turbo and manifold on it and it shot oil out onto my passenger side engine Bay Area.
Originally Posted by SingleTurboRx7
(Post 12203977)
have you pulled your spark plugs out and checks for signs of water?
Plugs are carbony and the one thing I didn't replace as I totally blanked on buying new ones. However, it wasn't wet per se when I removed them. https://cimg6.ibsrv.net/gimg/www.rx7...ecef1656d1.jpg https://cimg8.ibsrv.net/gimg/www.rx7...02ae8c15d9.png https://cimg0.ibsrv.net/gimg/www.rx7...3fe8102465.jpgOil coming from the manifold and downpipe when I jacked it up |
if it was ok before the ECU, its probably too rich/ you have too much premix.
if you have too much premix it wont combust, and it'll just start to pool in the exhaust. |
Originally Posted by j9fd3s
(Post 12204158)
if it was ok before the ECU, its probably too rich/ you have too much premix.
if you have too much premix it wont combust, and it'll just start to pool in the exhaust. Turned out I had a hole in the front rotor :( I have swapped the engine to my spare keg (s4 t2) and got it running |
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