Start the car today for the first time this winter, I had to floor the gas padel to make it happen. The car first ran fine when stayed around 2k rpm, once the car was warmed up there is burning smell and black smoke comming out of my tail pipe (plus the idle jumps around under 1k rpm). BTW, I am running single turbo with PFC.

I checked the vacumm line that goes into the MAP sensor, it's still connected. Anything else I should look for? If this is cause by my initial flooding, how can I fix that?

The engine feels like it's going to stop anytime, I will be hesitate to drive to the shop like this.

Thanks. OY

 

You are just running very rich take out a little fuel and see if that helps. You will need to tune your car properly.

Also your plugs may be fouled from running too rich you may need to replace em.

 

Dave told me to take out the car for a ride for about 10miles and it should go away, I will try that first. A lot of people I talked to seems to have the same problem when letting the car sit for too long.
Never had this issue when I had stock twin.

 

Take it out and step on it for a few miles, then change your plugs.

 

it sounds like you flooded it. I did this too this winter when i had to stand on the gas pedal to get it on. Just drive it on a well-known 7-15 mile piece of roadway and then change your spark plugs. Then let the engine idle for about 6 min (after you have changed your plugs) to make sure that it was that the engine just got flooded and then drive it for 4 or so miles after it seems to be running okay. That should fix it.

Dave

 

I tried already Dave, does't seems to work. I am going to get a flatbed down to KDR, I will post on what's been found. thanks.

 

Maybe you are running a little too rich. Your correction map may be tuned too rich that's why it's dumping a lot of fuel in the cold weather.

 

i have to agree, if the engine isn't flooded then it may be the correction map. If not, you could have a faulty O2 sensor tricking your engine and causing it to run too rich.

 

Thanks for the feed back Bucrx7 and RX7turboracerX! I hope it is like what you guys suspected, then there shouldn't be a big problem. I will bring these info. to KDR and see what he thinks. Dave does have tendency to give out richer maps but this is just way too rich to be a map issue (car was tuned in Oct.)

Is there a easy way to test the O2 sensor? (maybe from PFC?) Thanks.

 

The only good test of the O2 sensor is to pull it out and test it visually, err, by looking at and seeing if it has any visable damage. Unless you happen to own a ECU Engine Computer dignostic computer, they retail for around 10K. LOL. Let us know what happens

Dave

 

so what ever happened?

 

Made appointment with KDR next Wed. (if weather permits). Will know by then.

So what's up your car Rich? Is the bodywork done?

-Oliver