Cutting out high rpm/MAJOR backfire
Cutting out high rpm/MAJOR backfire
Hey all...so about two weeks ago my car started acting up, bogging out, misfiring, all that good stuff the we love. So i went ahead and got new plugs, wires, cap and rotor for the disty, and while i was at it i bought a new fuel filter, pcv valve and ckeaned out the TB...anyways under WOT around 5500rpm it starts to cut out and choke quite a bit, also when shifting 2nd to 3rd under WOT it violently backfires and i mean it shoots a 2ft flame and the bang that it makes rings my ears lol
So im guessing my ignition timing is off. My question is when adjusting it do i want to turn it up or down? (meaning when i loosen the bolts on the disty do i want to bring it up or down).
Also, ive recently had a test pipe installed as well a decrease in mpg, so maybe 02 sensors? Any input appreciated, Thanks!
So im guessing my ignition timing is off. My question is when adjusting it do i want to turn it up or down? (meaning when i loosen the bolts on the disty do i want to bring it up or down).
Also, ive recently had a test pipe installed as well a decrease in mpg, so maybe 02 sensors? Any input appreciated, Thanks!
93 GS SE - Raspberry metallic. K8 - 2 1/4in exhaust w/Magnaflow street series muffler, Custom intake, Kyb Gr2's w/Apex springs, Full kenwood audio - SOLD
- mitmaks
- Senior Member
- Posts: 8704
- Joined: September 10th, 2001, 2:01 am
- antispam: ~SPAM*SUX~
- Location: Spokane, WA
- Contact:
Re: Cutting out high rpm/MAJOR backfire
I would put your stock exhaust back on and start from there. You can rent timing light from most auto part stores.
Magnum s/s lines, strut bars, carbon fiber bezel, indiglow gauge, Sony Xplod, inverted c/f hood, SRD lower tie bar '93 GS SE '95 Cobra SVT #2722 '68 Charger R/T 440
http://www.cardomain.com/id/mitmaks
http://www.cardomain.com/id/mitmaks
Re: Cutting out high rpm/MAJOR backfire
The car came with a custom 2in and a magnaflow muffler..i threw the test pipe on because i had one laying around and the packing in the cat fell apart and was clogged up pretty bad i was surprised the car was still running witj how bad it was...but okay cool ill look into that thanks
93 GS SE - Raspberry metallic. K8 - 2 1/4in exhaust w/Magnaflow street series muffler, Custom intake, Kyb Gr2's w/Apex springs, Full kenwood audio - SOLD
- WhiteFinish
- Regular Member
- Posts: 1635
- Joined: April 3rd, 2006, 9:48 am
- Location: Netherlands
- Contact:
Re: Cutting out high rpm/MAJOR backfire
You'd need a timing light and than start adjusting.
Don't forget to put it in diag mode.
Don't forget to put it in diag mode.
Re: Cutting out high rpm/MAJOR backfire
Thanks ill remember that....do i want to advance the timing or retard?
93 GS SE - Raspberry metallic. K8 - 2 1/4in exhaust w/Magnaflow street series muffler, Custom intake, Kyb Gr2's w/Apex springs, Full kenwood audio - SOLD
-
- Regular Member
- Posts: 174
- Joined: November 22nd, 2008, 2:20 pm
- Location: Sydney, Nova Scotia
Re: Cutting out high rpm/MAJOR backfire
Just check your timing marks first, make sure at the crank it is good and you can also try adjusting your ignition timing by moving the disty back and forth. By the sound, you might need to advance it slightly. Make small adjustments until you find the sweet spot.
93 323 Bp'd, Front and rear strut braces, Mx-3 seats, JDM headlights and grill SOLD
93 Mx-3 GS Curved-Neck KLZE, 5 speed Conversion, Fidanza Flywheel, Cross Drilled Rotors
93 Mx-3 GS Curved-Neck KLZE, 5 speed Conversion, Fidanza Flywheel, Cross Drilled Rotors
- mikeetown
- Regular Member
- Posts: 357
- Joined: October 27th, 2009, 4:52 pm
- antispam: No
- Location: kelowna B.C.
Re: Cutting out high rpm/MAJOR backfire
Are you burning any or a lot of oil?
Definitely get your car timed first.
What codes downpour CEL show?
Definitely get your car timed first.
What codes downpour CEL show?
mikeetown
93 Black GS - J-spec KLDE, CLEAN CAR
92 Red GS - J-spec K8ZE, stripped interior - Written off
2004 Infinity G35 Track Edition - 6 speed manual
viewtopic.php?f=17&t=79142
93 Black GS - J-spec KLDE, CLEAN CAR
92 Red GS - J-spec K8ZE, stripped interior - Written off
2004 Infinity G35 Track Edition - 6 speed manual
viewtopic.php?f=17&t=79142
Re: Cutting out high rpm/MAJOR backfire
Thanks for the input guys...well i havent gotten the car plugged into to see what codes come up...but the CEL light is not on
93 GS SE - Raspberry metallic. K8 - 2 1/4in exhaust w/Magnaflow street series muffler, Custom intake, Kyb Gr2's w/Apex springs, Full kenwood audio - SOLD
Re: Cutting out high rpm/MAJOR backfire
If the CEL isn't on you have no codes. Usually putting the disty in the middle of the adjustment slot is close. Jump TEN and Gnd in the diagnostics box make sure your timing is set to 650 then set your timing. Is there any chance your valves could be burned? They would then leak and cause backfiring. Do a compression test to check if the valves are still sealing. I blew a muffler right off my car once because my valves were shot. lol
2004 Subaru WRX Silver, stage 2, minty interior.
2002 Subaru WRX Blue, SOLD (best E test numbers I've ever seen)
94 MX-6. Sold
92 GS KLZE 5 Speed
96 GS 5 speed, KLZE, Sold
95 GS Minty Shape Sold
92 GS Sold
92 GS Parts Car scrapped.
Feedback viewtopic.php?f=37&t=66348" onclick="window.open(this.href);return false;
7477th member.
I know you believe that you understand what you think I said but I'm sure you realize that what you heard is not what I meant.
2002 Subaru WRX Blue, SOLD (best E test numbers I've ever seen)
94 MX-6. Sold
92 GS KLZE 5 Speed
96 GS 5 speed, KLZE, Sold
95 GS Minty Shape Sold
92 GS Sold
92 GS Parts Car scrapped.
Feedback viewtopic.php?f=37&t=66348" onclick="window.open(this.href);return false;
7477th member.
I know you believe that you understand what you think I said but I'm sure you realize that what you heard is not what I meant.
Re: Cutting out high rpm/MAJOR backfire
Lolol it sounds like its gonna blow my muffler off...not sure if they,re burnt but im gonna take a look this weekend so ill keep u guys updated. Thanks!Daninski wrote:If the CEL isn't on you have no codes. Usually putting the disty in the middle of the adjustment slot is close. Jump TEN and Gnd in the diagnostics box make sure your timing is set to 650 then set your timing. Is there any chance your valves could be burned? They would then leak and cause backfiring. Do a compression test to check if the valves are still sealing. I blew a muffler right off my car once because my valves were shot. lol
93 GS SE - Raspberry metallic. K8 - 2 1/4in exhaust w/Magnaflow street series muffler, Custom intake, Kyb Gr2's w/Apex springs, Full kenwood audio - SOLD
Re: Cutting out high rpm/MAJOR backfire
Do a compression test and leak down for sure.
2004 Subaru WRX Silver, stage 2, minty interior.
2002 Subaru WRX Blue, SOLD (best E test numbers I've ever seen)
94 MX-6. Sold
92 GS KLZE 5 Speed
96 GS 5 speed, KLZE, Sold
95 GS Minty Shape Sold
92 GS Sold
92 GS Parts Car scrapped.
Feedback viewtopic.php?f=37&t=66348" onclick="window.open(this.href);return false;
7477th member.
I know you believe that you understand what you think I said but I'm sure you realize that what you heard is not what I meant.
2002 Subaru WRX Blue, SOLD (best E test numbers I've ever seen)
94 MX-6. Sold
92 GS KLZE 5 Speed
96 GS 5 speed, KLZE, Sold
95 GS Minty Shape Sold
92 GS Sold
92 GS Parts Car scrapped.
Feedback viewtopic.php?f=37&t=66348" onclick="window.open(this.href);return false;
7477th member.
I know you believe that you understand what you think I said but I'm sure you realize that what you heard is not what I meant.