Air Intake Blows Smoke, Car Extremely Lean!

  • 3 POSTS
  • MAZDA 626

1997 Mazda 626, 2.0L, automatic:

I bought this car 3 years ago as a package deal with another vehicle to fix up.

By advise of a past shadetree mechanic, I had the heads shaved (they were warped) and replaced the gaskets. I also replaced the pcm with one from a salvage yard.

OK, so after doing this the car never started and sat for a couple of years.

I get a new mechanic. As he starts to diagnose it, we get no fuel.

We trace it back to the fuel pump. The fuel pump definitely was NOT work, as we jumped it directly off the wires on the pump itself.

I just replaced the fuel pump with a working aftermarket fuel pump.

Now, we have fuel.

But the fuel pump relay isn't working, and we determine that it isn't being grounded. So we ground the relay and it works.

So, now, the car starts. BARELY. He has to hold the throttle and force it to stay running and it is VERY ROUGH.

It is EXTREMELY RICH, or LEAN, and with the air intake off on one side, the air intake blows out smoke, instead of sucking in air.

We've tester EGR, which works.

Where do we go from here? Please help. We are so close.


Do you
have the same problem?
Thursday, August 31st, 2006 AT 9:28 AM

1 Reply

  • 11,666 POSTS

Double check cam timing and valve adjustment

Was this
Tuesday, September 12th, 2006 AT 4:53 PM

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