[SCMBOB]

OK i got the cobra going now after 4 days it is bogging down and is smoking like crazy and smells like gas it ran fine for a day and now im just about to give up. it is a 95 cobra that i swapped with an e303 cam bbk ssi upper and lower cobra injectors bbk high flow fuel rail kirban fuel pressure reg. 70mm throttle body stage 2 clutch. i found oil in my intake so i think the smoking nailed but i dont know how it is getting there either through the throttle body or the pcv valve but this is my daily and i need some help.... what you think?

[fogged306]

Check your PCV valve and see if it's still good. Just take it out and shake it, if it makes noise you're still good. If the PCV is still good, then you most likely have too much positive crankcase pressure. That is caused by worn rings or making a lot of power. With stock heads, you're not making enough power to cause that so it's most likely worn rings. That alone will cause the engine to burn oil and the blowby will also cause the excess pressure to force oil up through the PCV and into your intake. I would do a leakdown or a compression test and see how your cylinders are.

[SCMBOB]

how do i do that?leak down test

[1LOUDGT]

Seems like a lot of fuel upgrades for a rather stock motor. Why are you running cobra injectors, is the car super charged or turbo? When you say smokeing is it white, blue, gray?

[SCMBOB]

grey smoke and the injectors came on the motor

[SCMBOB]

but i did a blow down test and the pressure went from 100 to 40 needs to be rebuilt and a sop here will do it and give me a spare long block with warrenty for 1400

[ryanw]

what were the pressure on each cylinder ?

[fogged306]

1400 is more than I'd ever sink into a stock bottom. So I'm assuming you figured out how to do the leakdown? Did you pull the valve covers when you did it to see if you could feel air coming out the valve guides/seals?

Also when you say grey smoke, does it have a bluish tinge to it? Usually it's either thick white for coolant (which has a sweet smell to it, of it you're like me it smells like a hot pretzel), bluish is oil, and thin white or black is too much fuel.

[1LOUDGT]

I would start by removeing those cobra injectors (save them) and installing some 19#.
Then check your fuel presure and adjust accordingly.

[SCMBOB]

pcv is good and the throttle body is also good i just found out that jegs sent me the wrong intake manifold or i ordered the wrong one but i have and 87-93 intake manifold on a 95 block non gt40 heads is this a problem but i want to rebuild the motor or im just gonna buy a 351 boss of ford racing i dunno (j/k on the boss i dont have 8g's) and the 1400 is with no core i was gonna get a spare long block just in case

[fogged306]

Originally Posted by 1LOUDGT I would start by removeing those cobra injectors (save them) and installing some 19#. Then check your fuel presure and adjust accordingly.

I agree. I didn't read your first post very well until now, I think. I didn't pay attention to the fact that you were bogging, and the fact that you have 24# injectors on an e7 headed engine. Plus you didn't mention if you have a MAF calibrated for them, or I missed that too. Either way, you've got more fuel than you need right now and if you don't have the right MAF it's just making things worse.