backfiring and other weirdness

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layank54

backfiring and other weirdness

Post by layank54 »

my sons 2.2 wagon has a few problems that i have not been able to
isolate...it all started when he did not heed my advice for dry gas
and keeping the tank filled up during our nasty month of january when
the temps were below zero more than above. after the third day of -25
to -30 his car would not start for shiznit.after swapping my legacys
optima battery into his wagon at least it would turn over, and it
finaly cranked. i had to holdthe key in crank position longer than i
probably should have but it did finaly fire off. then a day or two
later it started missing, then it starting backfiring,not very loudly
though. i replaced the plugs and i had a spare maf so i changed that
and i also changed the fuel filter. i also pulled each injector clip
to make sure they were working at least at idle. after installing the
fuel filter and hooking the battery up it cranked so easily and ran
very smoothly while it was warming up.then as soon as it warmed up it
started missing and backfiring as soon as i put it into drive and
stepped on the gas....i am not sure if ishould check the igniter or a
sensor{cam/ crank/ temp/ or O2 ] . todd erickson if you have a
suggestion or any of you other subietechs pleeezzzze help so i will
not have to get out the bfh to really fix it!
Josh Colombo

backfiring and other weirdness

Post by Josh Colombo »

Where is it backfiring out of?

The intake or the exhaust? I really have never heard too many issues
with the first gen legacies backfiring. Missing can be an issue, which
may or may not be injector related. You may want to still run the dry
gas cleaner through and fuel injector cleaner through. Depending on how
bad you think it is.....you may want to get the pressurized can fuel
injector cleaner and run the car off the can. This isn't too difficult,
but you need to make sure to disconnect the fuel pump and follow all the
directions.

Josh
layank54

backfiring and other weirdness

Post by layank54 »

josh thanks for the reply, its backfiring out the tb but not very
loudly..after i poured the gas out of the old filter i noticed that
the inlet side gas looked discolored and after a closer look it looks
like grit or rust colored specks. i am beginning to wonder if he ran
the tank too low and maybe some sediment got stirred up and went into
the system. i also tried to get a code in the ucheck mode but no cel
flashes so couldnt check those off.. i think iwill try the injector
cleaner and a new set of ngk wires.. after reading reading the haynes
manual i also wonder if the igniter could be
malfunctioning..hopefully its not one those way too expensive
crank/cam angle sensors as the backfiring points to atiming problem
from what i have read... i think the teeenagers mind is begining to
see the value in listening to what i tell him to do, at least as far
as dry gas and a full tank in the wintertime...... he is finding out
its not good to be without transportation! thanks for your help
Josh Colombo

backfiring and other weirdness

Post by Josh Colombo »

No prob,

Hope you figure out the problem. Let us know what you find out and
fixes it.

Josh
FREDERICK.WHITMORE@CN.CA

backfiring and other weirdness

Post by FREDERICK.WHITMORE@CN.CA »

I had to replace the ignitor on my 2.2 Turbo engine last year. I'm not sure if
ur having the same symptoms though. I believe my problem was caused by me
trying to clean my engine and in the process got some water on the ignitor.
The next day it was initially fine then it suddenly started to misfiring and
had very little power. I had a hard time determining if the loud noise was
coming from the engine or a blown exhaust system. Even my cat turned red hot
which freaked me out! In a nutshell the car sounded terrible! It started up a
few times at first until it finally refused to start. It was turning over but
wouldn't start and I was forced to tow it. As soon as the new ignitor was put
in it fired up first turn and ran flawlessly. Needless to say I've had no
problems since.

Good luck,
Fred
Bill Robinson

Wierd Backfiring

Post by Bill Robinson »

-----Original Message-----
From: Bill Robinson [mailto:vultureboy@mindspring.com]
Sent: Tuesday, February 11, 2003 8:57 AM
To: BC-BFLegacyWorks@Yahoo.com
Subject: RE: Wierd Backfiring


Farting back through the throttle body certainly sounds like a timing
problem. Perhaps the extreme cold start is a variable worth considering.
If a timing belt is going to jump a notch, there is no better time that when
the engine is cold cranking and the oil is as thick as tar.

Bill Robinson
92 USA Turbo sedan with 5 speed and a few modest street modifications.


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layank54

backfiring

Post by layank54 »

well i gave up trying to figure it out... cranked it up this 5degree
morning and no problems whatsoever,went a few miles down the road
turned it off, filled up the tank, cranked it up and as soon as i
stepped on thejuice same symptoms as before so i drove to my friends
garage and let it sit there and idle for 5 minutes....no missing and
ran smooth. turn it off and go inside, 15 minutes later we come out
so he can drive it and drop me off[ he has to replace all the oil
seals as it is leaking like a seive] and as soon as he steps on the
gas missing and backfiring....he is leaning towards faulty fuel
injector/s. so maybe the fuel system vac/injector clean will do the
trick. he will also check the three sensors that are usually suspect
when he has the seals and timing belts out. stay tuned!
layank54

backfiring

Post by layank54 »

finally cured it with plug wires and coilpack...the "new" looking
plug wires, ngks, apparently had a warmup gremlin in them as did the
coil, so a trip to the area auto salvage yard for a coil pak and old
wires off my turbo did the trick. i think a set of kv85's are in
order as well as a red top optima for his car. both of our subies
still do not like this -20 crap we seem to be having on a much too
frequent basis.....come on spring!!
Josh Colombo

backfiring

Post by Josh Colombo »

I'd suggest the yellow top over the red top.

The red top is for high compression, hard starting engines that need lots of juice. However I guess when it's real cold you may need it.

I'd prob still get the yellow top, but that's me.

Josh
Andrew Mouser

backfiring

Post by Andrew Mouser »

I've got the red top Optima and have been extremely
impressed with it. I think the yellow top costs more.
To my understanding the yellow top is advantageous if
you have a stereo that sucks a lot of power. I think
you can't go wrong with either choice.
Andrew
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