Help Needed Now!!!!please. New Engine Runs Like S#!t

[NOKA72]

GUYS TRIED TOO FIRE UP THE NEW ENGINE TODAY AND THE PLUGS WERE ALL FUEL FOULED.....GOT IT TO RUN BUT IT RAN LIKE IT HAD A BIG MISS OR CROSSED WIRES..SO I SHUT IT DOWN REAL QUICK...SO I GO BACK TO BASICS AND CHECK THE WIRES AND PLUGS AND CAM SENSOR TIMING...SO I CHECKED THE BOOK AND MY MOTOR GUIDE SAYS R45TSX AT 60 THOU...UNFORTUNATLY I TOOK THE PARTS HOUSE WORD FOR IT AND PUT IN WHAT THEY GAVE ME R44TS...SO I THINK THE PROBLEM MIGHT BE HERE...CAN SOMEONE TELL ME THE FACTORY PLUG AND GAP FOR AN 85 HOTAIR ENGINE MAYBE OFF THER STICKER UNDER THE HOOD OR AN ORIGINAL OWNER MIGHT KNOW LIKE..BFH..OTHERWISE I WILL HAVE TOO JUST STARTOVER FRESH IN THE MORNING FROM BASICS ALL OVER...THANKS VINNY

 

[cool 84]

I don't know about the plug type but you should never go more than .035 on the gap. A hotter plug like the ones you're using shouldn't make it misfire. The 44TS is probably fine for a stock or near stock hotair. I have to run .030 for high boost or it misfires.

 

[FJM568]

The .060 gap is for the NA motors with the HEI distributor...They told you the wrong plug...TELL them what plug you want, not what motor you have...These friggin computers today are making parts counter people at the stores into idiots...If it ain't in the computer, it don't fit on your car BS!!!

 

[crazygn]

Iam with the gap set at.35 , Also if this does not work check the injector plugs real good to make sure that they are on good.

 

[REDS HOT AIR]

a 44 plug would work fine if gapped down in the 30's

i've been running 43's in mine...on ac/delco's the lower number is colder

 

[crazygn]

Hey reds good to see your still alive . write me some time i think i lost your email, got the tran out , its yours if you still want it.

 

[NOKA72]

OKAY GUYS DAY TWO....I PUT R43TS AT 35 THOU AND CHECK OVER EVERYTHING AGAIN....ALL LOOKS GOOD..I FIRE IT UP AND SAME THING, RUNS LIKE THE WIRES ARE CROSSED ...SO I PULL A PLUG AND OF COURSE ITS WET WITH FUEL,I LOWERED FUEL PRESSURE TO 30 LBSAND DISCONNECT FUEL PUMP...START IT UP AND IT STARTS TO CLEAR UP...RUNS SMOOTH...SO HEY THAT MUST BE IT JUST LOADED IN FUEL....RUNS TILL IT CLEARS THAN I RECONNECT PUMP AND THERE IT GOES AGAIN STARTS MISSIN AND BUCKIN....AND POURIN OUT BLACK SMOKE THAT FILLED THE GARAGE LIKE IT WAS NIGHTTIME.....SO WHAT GIVES....
1.THE ONLY THING I CHANGED IN FUEL SYSTEM WAS INJECTORS I USED 30# GREENSTRIPES I BOUGHT OFF THE BOARD HERE..THEY LOOKED VERY GOOD..THERE A DISC DESIGN..IT SUPPOSED TO JUST HAVE A ROUND DISC ON THE TIP RIGHT IM NOT MISSING ANYTHING HERE AM I?????
2.ENGINE IS BASICALLY STOCK WITH POSTONS 107T CAM AND 30# INJ.IM USING STOCK CHIP RIGHT NOW SHOULD I HAVE ONE BURNT FOR THIS COMBO?????
3.DOES POSTONS CAM ALTER THE FIRING ORDER FROM A STOCK 85 SETUP????DOUBT IT!
4.SHOULD I JUST SWAP BACK TOO THE STOCK INJECTORS....TOO MUCH WORK ........WHAT DO YOU THINK????????
5.GUYS ONE MORE THING..I TRIED TO SCREW IN THE TORX SCREW ON THE THROTTLE BODY TO KEEP MY RPM UP AND STABLE BUT IT ONLY GOES SO FAR...SO TOO BRING IT TOO 3 GRAND I HAVE TOO DO IT BY HAND...HOW ARE YOU GUYS DOING THIS????

 

[crazygn]

You might want to check your fuel press reg if its only doing it when you have press on the fuel line.

 

[FJM568]

I would say fuel pressure reg problem too...You did have your injectors off and may have gotten debris inside the regulator causing it to not function properly...

 

[TType84]

put the screw back to stock, thats NOT an idle screw you cant just do that it doesnt work like that..

 

[REDS HOT AIR]

first off if you have 30# injectors you should have a chip burned for then.

if you get it running and get it hot enough to go in closed loop then the computer would back the fuel down .. but with the computer not reading the 02 it will just give the fuel that would be right for stock injectors but since you have bigger than stock injectors its going to be feeding it too much and not much you can do to change that

you can drop fuel pressure way down and make it slightly better till you get it warmed up but id order a chip for yor combo before you run into more problems.

Kev...my email switched to REDSTTYPE@COX.NET...

yea i'll take tranny just hold tight and we can meet up at budds creek or something..see-ya

 

[crazygn]

I didn't see the stock chip, i did this when i first got my car and it was night and day. It felt like a 16 sec car and not a 12 sec car. When i put the right chip in it ran great, try to get a chip.

 

[NOKA72]

WHATS UP GUYS.....OKAY I SET THE TORX SCREW BACK TO STOCK SETTING....SO IGUESS I JUST HAVE TOO HOLD THE RPM UP BY HOLDING THE THROTTLE BY HAND.....
SO RED YOU FEEL I SHOULD HAVE THE CHIP BURNT AND NOT TRY TO RUN IT UNTIL THEN???
SOME OF YOU MENTIONED THE REGULATOR, I CANT SEE HOW...WITH FP GUAGE ON THE CAR IT SEEMS TO HOLD CORRECT PRESSURES AND RESPONDES TO ALL THE ADJUSTMENTS ACCORDINGLY
WHO DO I CALL FOR A CHIP????AND WHERE AND HOW
SERIOUS ALL KIDDING ASIDE WHO DO I SEE FOR A HOTAIR CHIP??

 

[FJM568]

Well, first thing I'm suprised no one else has said is...

TURN THE CAP LOCKS OFF!!! Stop shouting...

Okay...

edit btw, with the ign off, how long does it hold your fuel pressure??? i.e. How long does it take to bleed down???

With the slightly bigger than stock injectors, you will need to turn down the fuel pressure some...If you are just now breaking in a new motor, turn your fuel pressure down to where it'll stay running without fouling out the plugs right away...The more you start and stop the motor now without breaking in a new cam properly, the greater your chances of wiping out a cam lobe(s)...Worry about getting it to idle right after you get it broken in properly...lower the fuel pressure w/vacuum hose off down to about 30-32# and put the hose back on...then start the car up and vary the rpms, but keep it above 2000 for about 20 mins(making sure that you check for any massive leaks(oil, coolant, etc...DO NOT LET THE MOTOR OVERHEAT...If it is overheating, then shut it down and find out why)...THIS IS CRITICAL...Then once you get the break-in period done, take the car out for a test drive with a scan tool hooked up and see what your BLMs and INTs are and then adjust your fuel pressure accordingly...The chip will be able to handle the slightly bigger injs but you really need to get another chip done for it...

Are you using the 84/5 ecm or have you swapped in the 86/7 ecm??? If you did the 86/7 ecm swap, is the chip for an 86/7 car??? If you are running the 86/7 intercooled chip, you WILL NEED TO turn the fuel pressure down if you don't have an intercooler on your car...I've found I needed to turn the pressure down about 7# from where the 86/7s were supposed to run their chips(i.e. chip recommended 45#, I had to run about 38# non-IC'd)...

Hope this helps out some...More questions, just ask...

 

[NOKA72]

I DID turn the fuel pressure down(hows this by the way better) and the problem im having is not at idle..im trying to break the cam in and all this misfiring occurs at higher rpm...im using the stock 85 ecm and chip fp at 28# and still when i run it ....it loads up and dumps black smoke and kinda misfires or seems so....just shakes bad and smokes....fp goes up with rpm and everything else seems normal...maybe it is in the chip???

 

[FJM568]

Do your injs look like this???

What is the numbers on the side of your injs???

 

[NOKA72]

my injectors have that same disc type bottom...but i believe the green stripe is around the middle not the top..i am going to have too check too be sure....why whats up??

 

[FJM568]

Because if they are like the one that I posted, you have 42.5# injs and not 30#...That may be why it is running so darn rich...

You need to get the numbers off of the injs and post them either on the gmttype mailing list or ask on the general tech page...

You may not have the injs you think you have or if you do, they may be sticking open...

Did you check to see if your losing pressure in the fuel rail after you shut the ignition off...Don't start the car, just turn the key to on to prime the pump...It should shut off after 3 secs...Then keep an eye on your fuel pressure gauge and see if it bleeds down right away...If it does, then something is sticking open somewhere, possibly a dirty inj that won't close which would screw with the way your motor runs...

As I've said...get the numbers off of the side of the inj...I don't know exactly where they would be at on the 30# injs...but get them and post on the general tech board to make sure of what they are...

they may just need to be cleaned and flowed...

 

[NOKA72]

well the fuel pressure comes up and holds steady...i dont think anything is wrong there...it hold pressure a good 20 min...and starts to drop slowly....i will get those numbers in the morning and see...man could it be....42.5 pounders....well see...thanks vinny

 

[FJM568]

If it's holding pressure for like 20 minutes after the ign is off, then it wouldn't be a stuck open inj...It would bleed down FAST...I think you may have some other type of inj or something...hopefully it will be something as easy as that...Need to find out for sure what you got, so you know what you might have to get...(probably just need to get a chip made, but need to know for sure what injs you have)...

Let us know...