86Z

iTrader: (4)

okay so i finally got the belt to stay on, i took her out for a spin, 1st i'm only getting 6-7 psi of boost i wanted 10lbs, man what a difference with the supercharger! i love it, except i come home and theres clouds and clouds of bluish/white smoke coming out of the exhaust, i followed the procharger instructions except i left the pcv valve attached. the FMU is set at full rich also, the motor never smoked a drop and has 9k on it, anyone else have something like this before? is it sucking oil in somewhere?

86Z

iTrader: (4)

nevermind i blew a perfectly good motor somehow

AC

iTrader: (3)

86Z, how do you think you blew the motor? When you were running the 6-7psi boost did you notice your fuel pressure? It should've been 70+ PSI. You may have run really lean if you did toast a piston or such. Again, what makes you think you blew rings / engine?

86Z

iTrader: (4)

because now when i bump the starter i heard a bang and then the starter grinded, when i manually turn the supercharger the engine will turn then stop and the supercharger belt slips on it

JBert

Where in CT are you? I can take a look at it for you.

rocluvr0013

I hope its an easy fix... *fingers crossed*

AC

iTrader: (3)

crap...good luck man. Rod maybe?

86Z

iTrader: (4)

well i dont understand what went wrong, it was a healthy motor before the supercharger, oh well now i have an excuse to build the 350 roller block on the engine stand

87tpi7749

86Z. Did you change the oil before you ran it on boost? If I remember you were having a heck of a time tuning an over rich idle. Probably diluted the oil real bad with gas. Can't lubricate the walls very well like that. Have you pulled the plugs yet?

FWIW, I justed ditched my 749 for a FAST XFI. I got fed up. It ran good but not good enough. My pops works at a machine shop in CT, if you need some help, let me know.

CRZYTRN-92Z28

OMG thats sucks!! Keep us posted on whats wrong. Like the guys said what was your fuel pressure, what do the plugs look like, is the nose of your crank wobbley?

86Z

iTrader: (4)

well the fuel pressure was set at 43psi at idle, i had a fuel pressure gauge on the fuel rail which did me no good in the car, i have an electric in car on the way, the gauge only went to 60lbs and is now not working possibly due to the fmu spiking more pressure, i did not change the oil and it does look kinda thin, damnit it's probably my fault somehow, it was my first time with boost, i'm gonna look at the motor tonight after work, i need a 350 recipe for tpi and boost

86Z

iTrader: (4)

guys, update, i pulled the valve covers, everything looks good, i pulled all the spark plugs, when i got to cyl 6 fuel poured all out onto the ground i mean a lot, i mentioned before that the fuel pressure gauge was not reading no more, so for haha's i turned the key to the on position fuel pump kicked on gauge moved slightly and dropped i then turned the motor over by hand and fuel poured from the same cylinder again, these are brand new ford motorsports 30lb/hr injectors, is one of them bad and thats why it's not holding pressure? the better question do you think anything happened to the motor driving it with the supercharger for a short while and not firing? the plug was really wet with gas...

86Z

iTrader: (4)

87tpi we should hook up sometime this summer, i hope my motor is okay, i think i'm gonna go with the dfi 7 instead of this fmu, i didnt have any luck with the 7749 neither.

89JYturbo

You should also check the fuel rail pressure regulator. It is possible that it's diaphragm ruptered and that would pump fuel through the vacuum hose and into the intake manifold. If this were your problem, the fuel would probably go into more than just the #6 cylinder, so maybe it is an injector. But he FPR is so easy to check, you should do it right away (just pull the vacuum hose off of it and turn on the key- there should be no fuel coming out of the regualtor vac hose).

Keep in mind that if the FPR diaphragm was weak, the higher fuel pressure from the FMU could have done it in. I had this happen to me personally, so check it out. And be sure to change the oil before you boost again

junkcltr

iTrader: (1)

You could test the cyl #6 injector by setting the #6 piston at TDC and applying +12v the the fuel pump via the ALDL connector pin or the fuel relay. If the injector is leaking bad enough you will see fuel pour out of the spark plug hole. Oil change after that.

www.megasquirt.info might be worth a look. Some people in the ECM board talk about it and seem to like it. I don't think it will run the coolant fan with the stock code though. Doesn't have the TCC code either.

86Z

iTrader: (4)

it's the #6 injector leaking like a pig, i took all the injectors out, theres fuel everywhere, the plenum and the procharger air inlet at the throttle body, the afpr looks fine

87tpi7749

Definitely, I usually hit the car shows in Colchester, Manchester, Windsor, Glastonbury most are small "cruise" nights.

I just pulled out some 30's barely run, If you need to borrow one until you get a replacement let me know. If you don't live too far away possibly we can hook up.

Motor is probably ok as long as it didn't hydrolock, you can either bend the rod or pound the rod bearing into failure. I actually had the same happen with a FPR rupturing it filled the plenum with fuel, I caught it pretty quick. I've also had a customer's vette bend a rod when trying to start the engine with a cylinder full of gas.

I have been told the Gen 7 is on a bad backorder, no release date published. I think Megasquirt II would be a nice set-up with wideband, I heard it does auto VE corrections based on AFR in closed loop using the wideband, but I haven't confirmed that it does. Would be nice if so considering the cost of the others.

Yea, the 749 performance isn't what I was looking for. I'm kinda picky and IMPATIENT. I just did the low z mod with 65pph injectors, that didn't make me happy either. I'm not giving up, I have all the hardware and software for chipping. I plan to practice on some stock apps. I'll retry the 749 some day after I learn a lot more. Keep in mind I have been running $58 for three years and still haven't gotten it the way I want it. Performance should not be accompanied by sacrifice and environment irresponsibilty. Now I'm no tree hugger but my efi motor should run cleaner than a tri power big block with no cats in 1960 something with a bad misfire. I punched my own hole in the ozone right over my house trying to tune my idle ve tables for the last three months.

86Z

iTrader: (4)

lol, well i'll have to figure out what ecu i'm going to go with, as far as i know i noticed the smoke right when i pulled in front of the garage, the only thing that concerns me is i tried turning it over afterwards and i heard some kind of bang and then the starter made it's grinding noise i hope the rod is okay, guess i wont know until i fire it up again, i'm gonna have to get some new injectors i'm not waiting for summit to figure it out

87tpi7749

Summit, good luck. Any time I had a warranty issue with them, it was buy another one & send back the defect, if it is defective then we will reimburse you. Always a PIA. Not that I think summit is bad, just the warranty stuff stinks. Like in your situation, you need one injector. They won't just send you one, unless you pay or send the old one back, like you're beating them out of one injector for that screaming 9 cylinder you're building. I had a problem with an Accel injector I got from them and thats how they handled it. I had to buy a whole new set & send back the old ones. I did get credited so its not all bad, just a pain. My 30's are just sitting on the shelf, if you need to borrow one, don't hesitate to ask.

BulliTooth

ok ima little lost, what happend? im lookin to get an ati and ive never installed a supercharger, this is kinda scaring me away. sry about the car man.

86Z

iTrader: (4)

i had an injector go bad and i'm worried that i bent a rod from it dumping all the fuel in the cylinder, waiting on new injectors, was no fault of the supercharger.

5.7iroc-02ws6

FWIW, I justed ditched my 749 for a FAST XFI. I got fed up. It ran good but not good enough. My pops works at a machine shop in CT, if you need some help, let me know.[/QUOTE]


Not to change the subject.... how do you like your FAST XFI??

86Z

iTrader: (4)

ok update again, the engine is fine!!!

KS91Z28

Good to hear!

AC

iTrader: (3)

86Z, I'm sure your a little less stressed out now knowing the engine is good. Curious though, engines typically dont' make a "bang" sound in a good way. Were you able to find out what it might have been? Also, are you planning on going back to a $58 code anytime or are you sticking wihth 8d?

86Z

iTrader: (4)

the bang wasnt really loud, i think the engine may have kicked back i'm not really sure, all i know is it doesnt make any noise and compression is good, is it possible that some fuel ignited in the exhaust seeing the cylinder was full of it? i am going to try $58 again seeing as the weather is getting nice and i have some time off, i definately would like to control my motor under boost.

86Z

iTrader: (4)

update, i drove the car for a long while today, engine is okay, although it doesnt sound good turning over, pulled the starter....(gear reduction mini) has a broken plastic gear inside

also i took the pcv off vacuum now the breather on the pass side valve cover emits oily smoke, why is this?

Drac0nic

Yes the MS-II unit will do auto correction of AFR based on the WB sensor, and the install isn't too bad especially on a TBI/TPI type engine. I tried to do something similar on a motor of mine with the fuel, luckily I didn't trash it though. Drained a good 7-8 quarts of oil/gas out of the stock oil pan, that was a lousy day to say the least. Good luck with what ever you do.

87tpi7749

Not a big deal, kinda nature of the beast, pcv sucks those crankcase fumes back into the engine for reburn. If you remove pcv, the crankcase pressure has to go somewhere. Keep in mind a small amount of smoke is acceptable, however if it is smoking like a locomotive, you may have a ring seal problem. There are no benefits to removing pcv, its actually bad in some respects not to have it, you can easily develop oil leaks from old seals & gaskets with the added pressure. Most pcv's will slam shut when you boost, so I would put it back on.

86Z

iTrader: (4)

yeah my uncle says the pcv will probably slam shut, there wasnt a lot of smoke but i was at idle at a stop light and saw it come through the hood a little bit, i'll put it back on as it did not do it before

83 Crossfire TA

iTrader: (2)

you've broken some rings or ring lands and are getting blow by.

86Z

iTrader: (4)

then my compression test would show that, which it didnt.

grover85

iTrader: (1)

I will second the pcv valve causing a problem. Also you were saying that it was boosting to low. Well you will have to get a different pulley to mess with that. I dont know much about your set up but a 10 lbs pulley for a 305 will be different then a 10 lbs pulley for a 350.