backfire at cold start - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

FreaQshoQ · 10-15-2013, 08:29 AM

hello all together!

Have you also already experienced backfire at a cold start when you step on the gas while pushing the sart button?
I´m asking cause i question myself if this is a normal reaction or if i should better go to the dealer
Hope for some experiences!

Fallen43 · 10-15-2013, 08:42 AM

No its not normal , I have had the same issue even while driving , take it in have them look at it the are replacing my ecu and check DI seals ...

FReSh · 10-15-2013, 10:06 AM

I don't think you should need to step on the gas while you are trying to start the car...

Don Ivey · 10-15-2013, 10:09 AM

Quote:

Originally Posted by FReSh

I don't think you should need to step on the gas while you are trying to start the car...

+1. Keep feet off throttle while starting.
You don't have carbs.

lickitysplit · 10-15-2013, 11:21 AM

Quote:

Originally Posted by Don Ivey

+1. Keep feet off throttle while starting.
You don't have carbs.

+2, see if you get pops when you start it without throttle. Pops are probably because you are throwing fuel into the engine and its rich from startup, some escapes into the ehaust and ignites.

humfrz · 10-15-2013, 11:39 AM

Quote:

Originally Posted by Don Ivey

+1. Keep feet off throttle while starting.
You don't have carbs.

I'll plus 3 that ...... yep, "old habits are hard to break" ..... but like said above, we don't have to "set" the choke anymore ....

humfrz

PS - no, my car doesn't backfire at startup.... it just peacefully goes through its little warm up dance.

FreaQshoQ · 10-15-2013, 11:43 AM

it just happens if i step on the gas
of course i know i don´t need to hit the pedal while starting but i was wondering if i was the only one with that occuring

bcj · 10-15-2013, 12:21 PM

Doc! It hurts when I do this!

drewbot · 10-15-2013, 12:24 PM

This happens to me in the mornings. Only when my car is started cold (from being sitting outside for 12+ hours).

1.5k-2k RPM idle with intermittent popping for 30 seconds. Then it dips to 1k RPM with no popping. Drive away with no popping.

FreaQshoQ · 10-15-2013, 01:52 PM

oh okay then it seems as it´s normal

always just happens to me when the engine´s cold and i give a little burst.

bkblitzed · 10-15-2013, 05:25 PM

so your intake sounds like it's going to blow up?

FreaQshoQ · 10-16-2013, 03:23 AM

i don´t exactly know where it comes from but would be interesting if someone knows
only thing i hear it the really loud popping when pushing the gas at cold start
if i don´t do that everything´s normal no gas no popping

WolfsFang · 10-16-2013, 03:25 AM

It happens to me sometimes but i have a borla cat delete plus muffler delete. On rare occasions my car will take some cranks to get going, once it starts and i hit the throttle my car will backfire alot but then stops.

bkblitzed · 10-16-2013, 05:20 AM

backfire is when your intake is blowing up lol. When its comming from the exhaust it's called after fire

10-15-2013, 08:29 AM	#1
FreaQshoQ Junior Member Join Date: Dec 2012 Drives: Toyota GT86 Location: Graz Posts: 8 Thanks: 0 Thanked 2 Times in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	backfire at cold start hello all together! Have you also already experienced backfire at a cold start when you step on the gas while pushing the sart button? I´m asking cause i question myself if this is a normal reaction or if i should better go to the dealer Hope for some experiences!

10-15-2013, 10:06 AM	#3
FReSh Dirt Trackin' Join Date: Oct 2012 Drives: '13 Raven FR-S MT Location: Rockville, MD Posts: 294 Thanks: 67 Thanked 114 Times in 75 Posts Mentioned: 1 Post(s) Tagged: 1 Thread(s)	I don't think you should need to step on the gas while you are trying to start the car... __________________ My Car Journal

10-16-2013, 03:25 AM	#13
WolfsFang Scrape Master Join Date: Jun 2012 Drives: Goal: Oldest FRS State Side Location: North NJ Posts: 1,161 Thanks: 238 Thanked 412 Times in 238 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	It happens to me sometimes but i have a borla cat delete plus muffler delete. On rare occasions my car will take some cranks to get going, once it starts and i hit the throttle my car will backfire alot but then stops. __________________ You do realize comparing the BRZ to the FR-S is like comparing which hand you love masterbating too right?

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10-15-2013, 11:43 AM	#7
FreaQshoQ Junior Member Join Date: Dec 2012 Drives: Toyota GT86 Location: Graz Posts: 8 Thanks: 0 Thanked 2 Times in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	it just happens if i step on the gas of course i know i don´t need to hit the pedal while starting but i was wondering if i was the only one with that occuring

10-15-2013, 12:24 PM	#9
drewbot ( ͡° ͜ʖ ͡°) Join Date: Sep 2013 Drives: '13 Whiteout FR-S A/T Location: Mississauga, ON Posts: 1,996 Thanks: 1,985 Thanked 1,452 Times in 752 Posts Mentioned: 36 Post(s) Tagged: 1 Thread(s)	This happens to me in the mornings. Only when my car is started cold (from being sitting outside for 12+ hours). 1.5k-2k RPM idle with intermittent popping for 30 seconds. Then it dips to 1k RPM with no popping. Drive away with no popping.

10-15-2013, 01:52 PM	#10
FreaQshoQ Junior Member Join Date: Dec 2012 Drives: Toyota GT86 Location: Graz Posts: 8 Thanks: 0 Thanked 2 Times in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	oh okay then it seems as it´s normal always just happens to me when the engine´s cold and i give a little burst.

10-15-2013, 05:25 PM	#11
bkblitzed is better than you Join Date: Jun 2013 Drives: 2013 raven FRS Location: Norcal Posts: 1,293 Thanks: 591 Thanked 1,347 Times in 745 Posts Mentioned: 25 Post(s) Tagged: 0 Thread(s)	so your intake sounds like it's going to blow up?

10-16-2013, 03:23 AM	#12
FreaQshoQ Junior Member Join Date: Dec 2012 Drives: Toyota GT86 Location: Graz Posts: 8 Thanks: 0 Thanked 2 Times in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	i don´t exactly know where it comes from but would be interesting if someone knows only thing i hear it the really loud popping when pushing the gas at cold start if i don´t do that everything´s normal no gas no popping

10-16-2013, 05:20 AM	#14
bkblitzed is better than you Join Date: Jun 2013 Drives: 2013 raven FRS Location: Norcal Posts: 1,293 Thanks: 591 Thanked 1,347 Times in 745 Posts Mentioned: 25 Post(s) Tagged: 0 Thread(s)	backfire is when your intake is blowing up lol. When its comming from the exhaust it's called after fire

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