ITaoB
Cheesecake
Location: Ontario, Canada
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« on: April 11, 2012, 04:33:20 PM » |
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Hey guys, I've had this problem with my car that's been getting worse and worse.
When I start my car cold (usually been sitting for weeks), it will run on 3 cylinders, then as it warms up, will go to 4,5,6. Never have an issue after that. My concern is that it started doing it where only one injector was out at startup, and now its down to 3.
This started occurring last year after I got a re-tune, (when it was really warm out) and this seems to happen when its colder outside. I know its the injectors because I've pulled the plugs before and they weren't wet and it didn't smell like gas inside the cylinders.
The injectors in question are sard 850cc low impedance. I have the proper resistor box and everything. I'm not super concerned since once it clears up, the car runs mint but I just find it weird that it seems to be getting progressively worse.
Any idears?
edited title w/engine -management
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PornStarSR
Double Rainbow! OMG!1!
Location: Santa Barbara CA
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« Reply #1 on: April 11, 2012, 09:53:08 PM » |
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Probably would help to say what motor it is.
But sounds like a tune problem to me, if the injectors work after it clears up. Then the injectors work.
Or maybe your getting fuel drain back on one fuel rail ( see this is where knowing the engine would help ) and getting a air bubble trapped at the rail could starve the injectors. But it sounds like your saying it runs, till it clears up. So it would have to be staggered failures, like 1 fail 3 fire 4 fail 2 fire and so on. It could be a couple together but I think you have a 2j and if it wasn't a staggered failure or misfire then it wouldn't run long enough to clear up.
I say your cold start enrichment scaling in the tune got fubar'd
That's my guess
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Vosko
Location: NJ
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« Reply #2 on: April 11, 2012, 10:00:05 PM » |
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are you running colder plugs ?
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ITaoB
Cheesecake
Location: Ontario, Canada
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« Reply #3 on: April 12, 2012, 04:41:44 AM » |
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Yeah totally forgot to mention its a 1jz with a power fc. I'm running ngk race copper plugs, they are #8.
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Vosko
Location: NJ
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« Reply #4 on: April 12, 2012, 08:30:29 AM » |
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My old car had 8s iridium's. I had to rev it a few times to clear them up when the engine was cold . Maybe the cold start is a little rich and they are fouling up?
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ITaoB
Cheesecake
Location: Ontario, Canada
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« Reply #5 on: April 12, 2012, 09:02:32 AM » |
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Hrm, the plugs are like 3 years old haha. I have a brand new set sitting in the shelf I could try out.
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Leigh
Location: Chicago
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« Reply #6 on: April 12, 2012, 11:35:43 AM » |
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haha jesus. Copper plugs need to be replaced like every 6 months
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Risky Devil!You all ruined drifting. All the fucking forieners and thier influance on it fucked it like a hammered bag of assholes. The whole point was to make it the worst handeling, eye catching machine possable and then make it fly. The skill was controling the beats not fucking auto pilot.
Your all going to Hell.
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Keith
Location: No Coast.
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« Reply #7 on: April 12, 2012, 12:29:41 PM » |
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BKR7E duuuuude.
Same thing, 1j & PFC. Runs like a champ in the cold.
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mr_240sx
Location: Ontario
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« Reply #8 on: April 12, 2012, 12:37:05 PM » |
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we are running roughly 25psi of boost and I found anything over 17-18psi, i kept blowing out the spark on the BKR7E and they kept fouling on start up. With the NGK racing plugs with 8 heat range, I've been able to run the same set of plugs for an entire season compared to the BKR7E i couldn't do a full event on the same set.
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Ash
So's your face
Location: Vancouver, BC
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« Reply #9 on: April 12, 2012, 12:39:20 PM » |
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BKR7E duuuuude.
Same thing, 1j & PFC. Runs like a champ in the cold.
What are the stock plugs? BKR6? |
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ITaoB
Cheesecake
Location: Ontario, Canada
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« Reply #10 on: April 12, 2012, 01:39:05 PM » |
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Yea 6 are stock. Like I said though I think it's injectors but y'all have me doubting it.
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Ash
So's your face
Location: Vancouver, BC
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« Reply #11 on: April 12, 2012, 04:31:12 PM » |
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If you're running that high of boost, replace the plugs and see. But if your not running really high boost drop back to the 7s and maybe get your cold start tune checked?
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ITaoB
Cheesecake
Location: Ontario, Canada
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« Reply #12 on: April 12, 2012, 04:41:16 PM » |
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Yea, I'll change them out and see...
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i.rashid
Location: TX
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« Reply #13 on: April 12, 2012, 11:20:32 PM » |
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we are running roughly 25psi of boost and I found anything over 17-18psi, i kept blowing out the spark on the BKR7E and they kept fouling on start up. With the NGK racing plugs with 8 heat range, I've been able to run the same set of plugs for an entire season compared to the BKR7E i couldn't do a full event on the same set.
yea mine would foul out pretty easy also. 3 yrs on coppers is amazing! lol |
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ITaoB
Cheesecake
Location: Ontario, Canada
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« Reply #14 on: April 13, 2012, 06:50:40 AM » |
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I was about to change them out at the tuners shop, but he said if they don't blow out at 26 psi then they don't need o be replaced. That being said I'm sure that they should be changed regardless, it's not like they are expensive.
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