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View Full Version : so its running on 3 cylnders again


importdude
02-11-2008, 04:35 PM
just happend last night, car was vibrating little more than normal so i figured its cuz one of my cat bolts broke or some sort..

fast forward this morning
i checked the car out
#4 fuel injector clip when remove does not make an audible differance:(

will be chekcing maf again,
then for spark
then for fuel
then compression test

any more ideas?

car drove normal for 3 months after i fixed it the first time now its at it again!!!!

ExtremeD
02-11-2008, 04:48 PM
check the clip on the coil pack, i had a loose wire and would case it to do that some times

importdude
02-11-2008, 04:55 PM
its stock ka24de s14


#4 flooded with fuel, gotta check for spark now

johngriff
02-11-2008, 05:01 PM
#4 flooded with fuel, gotta check for spark now

Bad injector/oring

Indolent
02-11-2008, 05:02 PM
Same thing happened to me sorta, the little pintle cap on the injector broke out, so fuel was POURING like a mofo into the cylinder, ran like crap and blew some nasty gunshot loud flames

Unbolt the fuel rail but don't disconnect the lines, disconnect the spark plug wires, hold it up so you can look underneath the injectors, and crank your motor and see if they're all spitting the same

importdude
02-11-2008, 05:21 PM
150 150 150 140

there is spark

ill be trying that

steve shadows
02-11-2008, 05:23 PM
It's either a fouled spark plug (ruined)

or Failed Injector.

I have had a side feed fail on my Infiniti.

they do break it is just extremely rare.

MTalon
02-11-2008, 05:42 PM
I had an injector on my sr that would get stuck at times.. It would run great for awhile, then it would run like crap "barely ran at all". Is there any smoke when its running on 3 cyl? Sounds like its flooding to me but im not sure. So injector, or injector o-ring. Or spark as stated above.

p.s. mine was a sr that had the injector fail

Onitsukagirl
02-11-2008, 05:49 PM
I had an injector on my sr that would get stuck at times.. It would run great for awhile, then it would run like crap "barely ran at all". Is there any smoke when its running on 3 cyl? Sounds like its flooding to me but im not sure. So injector, or injector o-ring. Or spark as stated above.

p.s. mine was a sr that had the injector fail


I had this problem. Car was backfiring like crazy, idled crappy.. guzzled gas. Black smoked like crazy... pulled injector clip of of the failed injector and no change in idle whereas the others made changes in idle. I guess the injector was stuck open.. maybe it was the cheap fuel I ran.. who knows. I never run anything other than premium in my SR. I swapped that sucker and everything was perfect. BTW, I have a spare injector for you sitting in my toolbox if you need it!

importdude
02-11-2008, 06:09 PM
oh so......

i took off injector #4,

The hole was filled with gas and it finally went down after i took it off(so i think its the injector (stuck open?)
also found a riped lower seal

so what do you guys think?
stuck injector?(if so ill toss that one out)
the lower seal wont make it flood would it?


http://img.photobucket.com/albums/v353/importdude/021108_154805.jpg

johngriff
02-11-2008, 06:19 PM
Yes the lower seal will make it flood, because the injector picks up fuel from around it, then meters it into the engine by the pintle.

So the bad seal lets fuel just drain in.


LIKE I POSTED 10 POSTS AGO.

BAD O-RING.

importdude
02-11-2008, 06:21 PM
Yes the lower seal will make it flood, because the injector picks up fuel from around it, then meters it into the engine by the pintle.

So the bad seal lets fuel just drain in.


LIKE I POSTED 10 POSTS AGO.

BAD O-RING.
:bigok:
thx

johngriff
02-11-2008, 06:23 PM
Oh yeah,

Take the spark plug out, and blow compressed air, like out of an air compressor into the spark hole, to get all that extra fuel out (so you don't crank and hydrolock the motor).

And, change the oil after this, as I am sure alot of fuel has drained into the oil now. Raw fuel in the oil can get around the bearings, drying them out, making them wear crank/bearing.

importdude
02-11-2008, 06:36 PM
Yes the lower seal will make it flood, because the injector picks up fuel from around it, then meters it into the engine by the pintle.

So the bad seal lets fuel just drain in.


LIKE I POSTED 10 POSTS AGO.

BAD O-RING.

Oh yeah,

Take the spark plug out, and blow compressed air, like out of an air compressor into the spark hole, to get all that extra fuel out (so you don't crank and hydrolock the motor).

And, change the oil after this, as I am sure alot of fuel has drained into the oil now. Raw fuel in the oil can get around the bearings, drying them out, making them wear crank/bearing.

yah im doing that right now,
no air compressor:( ima use the cans for computer cleaning to shoot it haha