Blown up plenum!
01-12-2010, 09:45 PM
#1
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Blown up plenum!
Wondering if anyone has ever had their plenum blow up? When I turned my ignition over I heard a loud bang. Refired the engine...seemed like I was running on only a few cylinders and sounded like I had an exhaust leek. Motor quickly stalled. Opened the hood to find a piece the size of a football had blown out of the plenum just past the throtle body. It is a 2003 with only 130 000kms. Is this normal, expensive, will it damage my motor? My mechanics, with a combined 50 years experience, have never seen anything like it.
01-13-2010, 02:50 AM
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+1, lack of information FTL.
I bet it's an old version V+ though.
WOW!! You have an army of Mechanics huh?
<------(Hates when people refer to "their mechanics")
I bet it's an old version V+ though.
<------(Hates when people refer to "their mechanics")
01-13-2010, 04:46 AM
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you had a significant misfire - the question is what caused it? I have never seen a stock manifold just let go like that. Was it ever dropped? Is it the original manifold that came with the car?
It can be the result of any number of things - best bet is to have the car examined by a competant shop
It can be the result of any number of things - best bet is to have the car examined by a competant shop
Last edited by Z1 Performance; 01-13-2010 at 04:47 AM.
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01-13-2010, 09:26 AM
#8
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It's the factory plenum (intake). My mechanics think the blow up was caused by my cold air intake system running in cold weather. Engine back fired because of unburnt fuel in the plenum.
01-13-2010, 09:41 AM
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the cold air has to pass through the MAF, which tells the computer the air temperature and the computer responds by telling the injectors how much to fuel is needed - so that explanation seems unlikely
is the plenum the original one for the car, or did you buy it used? has it recently been removed for any reason? have you checked the condition of the coils/plugs to see if any arcing took place? Have you checked the PCV?
is the plenum the original one for the car, or did you buy it used? has it recently been removed for any reason? have you checked the condition of the coils/plugs to see if any arcing took place? Have you checked the PCV?
Last edited by Z1 Performance; 01-13-2010 at 09:49 AM.
01-13-2010, 09:00 PM
#12
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You are right...it was not caused by my cold air intake as thought. Turns out that I do NOT have a stock plenum. The owner before me put on a plastic, aftermarket plenum for reasons that escape me. The factory alluminum plenum, I've been told should not fail even in a back fire. Thanks for the interest and help.
01-14-2010, 02:33 AM
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You are right...it was not caused by my cold air intake as thought. Turns out that I do NOT have a stock plenum. The owner before me put on a plastic, aftermarket plenum for reasons that escape me. The factory alluminum plenum, I've been told should not fail even in a back fire. Thanks for the interest and help.
Way to be aware of what's under your hood!
Unless the previous owner painted it silver, and you merely glanced at yoru engine, i have no idea how you didn't notice that you had a black plastic plenum, probably without the stock engine cover.I'd contact Kinetix, i'm pretty sure they are doing free upgrades for those that have the old version that have collapsed.
How about some pics?
01-14-2010, 05:37 AM
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You are right...it was not caused by my cold air intake as thought. Turns out that I do NOT have a stock plenum. The owner before me put on a plastic, aftermarket plenum for reasons that escape me. The factory alluminum plenum, I've been told should not fail even in a back fire. Thanks for the interest and help.
do yourself a favor, get yourself a stock upper plenum. They are easily available used. Fit a spacer while you're at it, and you'll have a plenum that is better than anything plastic, and won't cause similar issues in the future
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01-14-2010, 09:39 PM
#18
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Okay...I love my Z but you guys know way more s..t about your cars than I do. I feel like a retard for not knowing that I had an aftermarket plenum. I had a new, stock plenum put on and it is angry compared to the Kinetix plenum. The powerband starts way lower in the rpms and the wheels wont stop spinning. Funny that I'm excited about the stock intake considering some of the mods you guys have done. And yes, I refired it after hearing a loud bang. I'm really not car illiterate...no really. Thanks for not 'flaming' me too badly.
01-15-2010, 02:21 AM
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Okay...I love my Z but you guys know way more s..t about your cars than I do. I feel like a retard for not knowing that I had an aftermarket plenum. I had a new, stock plenum put on and it is angry compared to the Kinetix plenum. The powerband starts way lower in the rpms and the wheels wont stop spinning. Funny that I'm excited about the stock intake considering some of the mods you guys have done. And yes, I refired it after hearing a loud bang. I'm really not car illiterate...no really. Thanks for not 'flaming' me too badly.
Last edited by halfass872; 01-16-2010 at 11:40 AM.
