does any one have any idea's:
i was driving and hit the gas at 4500 the fuel cut hit then a big puff of smoke came out and it started running like **** i can hear like a pssst sound every time the motor turns(sounds like a vac leak). the car starts fine but then idles like **** and the air fuel goes crazy when i took it for a test run

 

Check the line running to the MAP (BOOST) sensor. It's along the firewall inside the engine bay on the driver's side. Make sure the vacuum line didn't pop off.

If it did, reconnect the line and reset the ECU.

 

i checked it and it didn't pop off

 

the question would be , why did you hit fuel cut? Sounds like the motor is done really, because when the seals are bad, it wont idle right but it will usually drive decently at higher RPMs. If you have a boost guage, does the vaccum bounce around at idle ? Also, what is the vacc at idle ?

 

Do you have a boost gauge?

Basically, it could be a lot of things (including a blown motor). You just have to start troubleshooting.

 

no it stays prity contant but it reading less vac then normal and when i give it gas it spools real fast and blows off loader then a normal nutral rev

 

what vac does it read ? Does the motor shake violently at idle ?

 

and it still holds a perfect 750 ide it just is ruf

 

it reads 5 pound and it normaly would be around 11

 

sounds like your motor is done man, sorry to hear that though..

 

well i'm tryin to get an idea what to expect i'm goin to drive it up to kd rotary the guys who built the motor tommarow

 

thanks for you'r help fella's

 

are you joking... or can you seriously not spell for ****?

 

no problem man. Good luck with that, hopefully the rebuild will be cheap, get some 3mm seals and port her out !

 

I was thinking the same thing!!

-Alex

 

well next time u blow a motor 2 hour before posting lets see how clear your head is

 

some people just can't type or honeslty just don't care if they have typos. Or like my friend who has nerve damage, he can't type the left side of the keyboard well. Should ask before you start raggin on someone.

 

Like Mahjik said there are a LOT of things that could make your car run like that. KDR will have a solution for you in no time.

 

his motor is probably fucked and you guys are worried bout how he spells?

 

What mods do you have and how often have you been hitting fuel cut?

 

sounds like when I blew my lower intake manifold gasket, but my idle was much higher then 750, does sound like MAP hose fell off. Are you spraying oil out your exhaust?

 

Chances are, his motor is just fine. Really, everyone is always telling someone they blew their motor, when in fact it was a slit in a coupler or something else of that sort. I think people need to lighten up, and gather all their facts before getting someone all worried about a blown motor.

Anywho, i'd go over EVERY coupler on the car. Don't just look at them, take them off and inspect them. I had a similar problem when the factory coupler on the y-pipe ripped. (where the y-pipe joins to the plastic crossover pipe.) Also go over every vac. hose you have easy access to. I had another similar problem when a hose popped off the black box right in front of the UIM. If everything i've listed isn't the problem, go back over the hose that leads to the MAP. It might not have came off RIGHT at the MAP, but it could have a little ways down. If that's not the problem either, then try looking at gaskets. The list goes on and on.

Now, if everything above checks out ok, have a compression test done. That's the only way your going to know if you have a blown motor. If that checks out ok, then take it to someone who deals with rotarys, and have it completely checked over.

It'll also help to know what mods you have, how many times you've hit fuel cut. Also, have you done anything to try and correct the situation, or have you just continued to drive the car in that manner? (Hitting fuel cut)

-Alex

Edit: BTW, that wasn't directed towards you rescueranger.