Just had a clutch job done. The car developed a bad vibration in the shifter when I step on the accelerator to put it into gear. My mechanic says one blade is running too rich and the plugs in that blade are black. He said that he prove this by the plugs from one blade shows ok. He says the vibration is from the engine but the engine was fine before it went in for the clutch job. I think he did collateral damage when he did the clutch job. Now the car is not drivable. He spend 2 hours trying to track down the problem now says he does not work on rx7 enough to solve the problem. Does anyone know what would cause this problem. Grounding strap? Help.... :Now I do not want him to continue working on the car. Does anyone know a good RX-7 Garage in Ottawa, Ontario, Canada I can take the car to? angry:

 

That sounds pretty odd, how does it idle, besides the vibration? It would not be a groudning strap. Maybe counterweight or flywheel issue... it could also be that it isn't running properly, but you should be bale to check that out by pulling plugs or simply listening to it idle.

 

Yeah I would guess that they forgot to put the counterweight back



did you upgrade to a lightweight flywheel? or is everything still stock?

 

The clutch and flywheel is stock. They pull the new clutch again and check the new clutch that was put in and say they were fine. In turns of idle, it seemed idle ok to me. What are the counter weights?

 

Counter weight sounds like a likely cause. It seems to idle ok. As soon as it revs up the vibration can be felt on the shifter. The flywheel is stock.

 

Just check with the garage again. They said the counter weight is in. They also still believe it is a problem with one of the blade. They said that one blade's plugs are white while the other blade's plugs are black. It idles ok but when they give it a bit of gas, blue smoke comes out. They believe the vibration comes out from the engine and one Blade is running too rich. They told me that it must has something to do with the fuel injector that is injecting too much fuel into that one blade because the plugs are black. I don't trust them now.

 

One more thing that was done while the clutch is being changed was that the cat was changed to a high flow Ntec converter. I do not think it has anything to do with that. The Garage also stated that compression on the blade is fine.

 

Have you checked the plugs

 

The plugs was cleaned. But they said it was fouled again within 10 minutes.

 

ok so maybe the plugs are causing the problem, but the car was running fine before the clutch job right? The 2 can not be related, so in plain english they screwed something up. Have them start looking for the obvious things, a wire or harness that got pinched between the engine and trans, and ofcourse if they did'nt use an engine support while the trans is out, the engine will move alot, this could have casued a broken/diconnected electical connection, or a hose to pop off.

Just a few ideas off the top of my head