has any one had this problem before

[hulk_lil87gt]

ok i did a intake swap from a stock HO to the cobra intake. i have to get the car timed bad. But the last couple of days there has been smoke coming from the exhuast. yes i know smoke will come out from the car sitting for a bit and thats wht an exhaust dose. the thing thats is bothering me about it tho is it smells like fuel and kinda gives u a headach. i have thought possible head gasget but it dosent get any thinker wen you are driving its only at a idle it dose it. when you take off it give off a cloud like it was burning oil.. what the hell is going on.. and nother thing i have a fuel pressure gauge and today i was watchin it as i pushed the throttle and it was around 35-38psi but drops wen u hit the gas and it was like it just keept ging down is this normal? dose it have n e thing to day with the other problem or what? thanks for help

 

[aar0s]

hmm, im wondering if you dont have a gasket leaking on the lower intake. dont know what to tell ya about the fuel smell.

 

[liljoe07]

Fuel Pressure needs to be monitored when driving. If you were sitting in the Driveway and reving it to see if the Fuel pressure will raise, you will be dis-appointed. It raises when the vacuum lowers. But thats a lengthy post to type as as to why it does what it does with no load.

Things to check:
1-PCV valve and line
2-PCV mesh filter below the PCV valve.
3-Throttle body to filler neck hose installed?

 

[Vinnietbird]

After the swap,did you drain the oil pan well and add new oil? Maybe you got water in the block from removing the intake.

 

[hulk_lil87gt]

yea drain the oil and changed it with penzoil high milage.. wen i get it bac on the road i am going to do a engine fluch at my job. to get the rest of that crap out. so if it is just the water/antifreeze it is just going to take some time to burn off

 

[white 89 GT]

Sounds like one or both intake gaskets may have slid down a little.

 

[hulk_lil87gt]

where should the intake gasgets be meaning how high up ? and should i use any type rtv like glue???

 

[wythors]

If this is a Chinese-made Cobra intake (does it say Ford Racing by the throttle body?) it is a known problem. They have a huge oil consumption problem if they don't have a special baffle installed. There have been numerous threads about it on both here and Corral. I was one of the first victims of this problem and have since swapped it out for a GT40.

 

[hulk_lil87gt]

Posted via Mobile Device could this problem be cause also maybe do to a leaking injectore not set in to the lower intake manifold????

 

[Mustang5L5]

Prob not.

When you installed the lower intake, did you just drop it on the block and bolt it down? Or did you screw in studs and use them to guide the lower intake down?


It could be coolant leaking into one of the engine cylinders from a bad seal on the gasket. It is bright white smoke? Or is it grey?

 

[hulk_lil87gt]

Posted via Mobile Device i set the lower down to the block (nicly) and then finger tighten the bolts and tightened them up to the bolt seqance

 

[Mustang5L5]

Well, if it's a coolant leak, it could be washing out the plug and preventing it from firing...so basically you are pumping out raw fuel.

Do you have a misfire at all? Or is the car running well?

I'd pull the plugs and take a visual for anything "odd"

 

[90mustangGT]

Sounds like you didn't install the baffle or the mesh screen to the PCV valve. If it's not that then you didn't seal the intake to the heads very well. Torque to specs, overtorque and you'll split the gaskets and you might as well not have gaskets.

 

[hulk_lil87gt]

Posted via Mobile Device ok i am going to check the pvc mesh i know the valve is good cuz i took it from work. the bolts on the lower intake are tight they do need to be checked again to make sure everything is good. ......... if the mesh is old and f***ed up will it cause this also.... And yes the car dose run pretty rought i am going to change the plugs today and see where that gets me

 

[hulk_lil87gt]

Posted via Mobile Device mustanf5l5 the smoke is in between white and gray srry didnt say that sooner

 

[wythors]

Posted via Mobile Device ok i am going to check the pvc mesh i know the valve is good cuz i took it from work. the bolts on the lower intake are tight they do need to be checked again to make sure everything is good. ......... if the mesh is old and f***ed up will it cause this also.... And yes the car dose run pretty rought i am going to change the plugs today and see where that gets me

I'll bet that you find #4 and #8 to be oil fouled.

 

[hulk_lil87gt]

i havent got to checkin any thing on the car yet had family things needed to be done i am off the next two days and going to work on it. but i wanted to throw in there that if i try to hold a consent speed of maybe 25 or any speed really as i hold the gas down a bit to hold that speed its like the car spits but it will go away if i speed up or take my foot off the gas.. i am going to pull the plugs tomorrow and see what they look like and get a pvc mesh also

 

[2000xp8]

It's likely your intake gaskets.

 

[hulk_lil87gt]

ok just a question wen i got the gasget set the car at the parts store told me the the lower gasget where the same for the stock 5.0 intake as the cobra is this tru cuz if not then the gasgets are probly te problem

 

[liljoe07]

Lower intake gaskets are the same