#78711, "weird knocking noise NOT fuel related...come in and discuss!!!"
the noise that i have been experiencing only when going into boost and only with colder outside temps, that was previously thought to be pre-detination of some kind due to no intake temp compensation with the 034EFI causing me to go lean with the denser, colder air... is in fact not!!
played with the 034, got the AF to sit flattly around 10.5ish for 2 3rd gear pulls and STILL have the ticking!!! so now i am cluless as to what the noise is and what to do next!
any thoughts, inputs, ideas? an i gonna blow my shit up if i keep boostin??
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#78717, "RE: weird knocking noise NOT fuel related...come in and discuss!!!" In response to Reply # 0
Well I'll throw this in although its not technical at all. A few weeks ago when I'd go into boost and the rpms would rise I'd get a knocking or clanking sound from the engine bay. I tried and tried to find it and finally I put the car up on stands and found that the heat sheild that ran down the exhaust had rusted loose and was rattling, I also found that the brackets that hold the intake manifold were also loose and rattling. Are you sure the sound is inside your motor? I was almost ready to pull my motor again to check things out before I found out it was no big deal. I'm not very familiar with the 034 setup so I'm not sure what to tell you. How do your egt's look? If their not to high while your boosting I'd start to look else where for the problem.
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#78737, "RE: weird knocking noise NOT fuel related...come in and discuss!!!" In response to Reply # 1
Is it a hard clunk? or a slight tick?
If its the "cricket" sounds from your head then thats just our noisy head components. Thats normal, but can be "fixed" by upgrading to the Pt cruiser stuff.
If its in the bottom end then thats when I would be carefull. how much was your block over bored to?
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#78739, "RE: weird knocking noise NOT fuel related...come in and discuss!!!" In response to Reply # 2
Originally posted by flamineclipse Well I'll throw this in although its not technical at all. A few weeks ago when I'd go into boost and the rpms would rise I'd get a knocking or clanking sound from the engine bay. I tried and tried to find it and finally I put the car up on stands and found that the heat sheild that ran down the exhaust had rusted loose and was rattling, I also found that the brackets that hold the intake manifold were also loose and rattling. Are you sure the sound is inside your motor? I was almost ready to pull my motor again to check things out before I found out it was no big deal. I'm not very familiar with the 034 setup so I'm not sure what to tell you. How do your egt's look? If their not to high while your boosting I'd start to look else where for the problem.
its nothing loose in the engine bay. it only does it when its cold. and only in boost!it sound like valve train noise....a definate ticking.
Originally posted by Chamuko Is it a hard clunk? or a slight tick? If its the "cricket" sounds from your head then thats just our noisy head components. Thats normal, but can be "fixed" by upgrading to the Pt cruiser stuff. If its in the bottom end then thats when I would be carefull. how much was your block over bored to?
its a tick that very much resembles lifter ticking, except louder (i think, never heard our infamous lifter ticks before). i have the upgraded PT stuff in there, the motor was only bored .020 over.
and again the weird part is that it only happens in colder temps, and in boost. last night when i did the aforementioned runs, it was about 40* outside, with intake temps in the low to mid 60's. today, (daytime)its closer to 50ish* and i had no ticking in boost at all! never touched the fuel from last night, nothing has changed.
what the hell could case that noise only in those conditions?
USED TO HAVE...Everything you wish you had, and then some...
You are somebody special Tim, you matter! - from the admins (but nobody likes you, because your username is just like that other guy's, and you whine a lot)
#78742, "RE: weird knocking noise NOT fuel related...come in and discuss!!!" In response to Reply # 3
You see the head sees much lower oil pressure. How long were your driving before you stepped on it? Even If the gauge marked warm, the oil might not have been flowing all that well do to the viscosity.
I also only heard the ticking when I went to say northern california in winter. Its about those temps. Also only at night and on freeway runs.
Kinda sounds like a flute and metalic crickets. Another note is that It sounded loud enough that I could hear it over the exhaust when on the highway. Mostly on interchanges where I had to let off the throttle for a turn.
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FOUNDER of the Central Cali chapter of 2GNT! (I got kicked out after I refused to go Cow tiping) - Hehehe you know who this is for
#78751, "RE: weird knocking noise NOT fuel related...come in and discuss!!!" In response to Reply # 4
i dont think its viscosity related, cause when i went over to dyno a few weeks ago, it would not do it down at a lower elevation, but up higher in a mountain pass it would do it, but then when i got down lower again, it would not. however... i just changed my oil about a month or so ago to penzoil 10w30. im the standard 1/2 qt low that we all seem to run at... shold i go lower on the viscosity, 10w20 maybe?
USED TO HAVE...Everything you wish you had, and then some...
You are somebody special Tim, you matter! - from the admins (but nobody likes you, because your username is just like that other guy's, and you whine a lot)
#78778, "RE: weird knocking noise NOT fuel related...come in and discuss!!!" In response to Reply # 0
Originally posted by tim97rs the noise that i have been experiencing only when going into boost and only with colder outside temps, that was previously thought to be pre-detination of some kind due to no intake temp compensation with the 034EFI causing me to go lean with the denser, colder air... is in fact not!!
I knew it.
Originally posted by tim97rs played with the 034, got the AF to sit flattly around 10.5ish for 2 3rd gear pulls and STILL have the ticking!!! so now i am cluless as to what the noise is and what to do next! any thoughts, inputs, ideas? an i gonna blow my shit up if i keep boostin??
Have you checked the EGR gaskets? Make sure they have a tight seal.
#78787, "RE: weird knocking noise NOT fuel related...come in and discuss!!!" In response to Reply # 6
no egr sytem! just very well sealed (i will check again) covers!
Why do you think the EGR wouold be involved, and how?
USED TO HAVE...Everything you wish you had, and then some...
You are somebody special Tim, you matter! - from the admins (but nobody likes you, because your username is just like that other guy's, and you whine a lot)
#78789, "RE: weird knocking noise NOT fuel related...come in and discuss!!!" In response to Reply # 7
If it was a density issue then It would do it more when your at lower elevation. Since you just said it does the opposite then That just gives me more reason to beleive that it not.
This is a tricky one...
Member # 751
FOUNDER of the Central Cali chapter of 2GNT! (I got kicked out after I refused to go Cow tiping) - Hehehe you know who this is for
#78791, "RE: weird knocking noise NOT fuel related...come in and discuss!!!" In response to Reply # 8
One important question here, what boost level does this happen at? Does it do it even in lower boost? If it only does it in hihger boost, 15 psi maybe, then it could be detonation..I've run well under 11.0:1 and could still get 1-2 seconds of knock during peak torque rpm, on a 5th to 4th gear WOT downshift at 15 psi...
13.5 @108 MPH-2.2 60ft(stupid FWD!) S16G @ 18 PSI/FMIC/Running on MegaSquirt II (Now with sequential fuel injection) My webpage: http://eclipsed4evr.home.comcast.net -1998 Mitsubishi Eclipse RS-T- "Toy" -1992 Plymouth Laser Turbo AWD(SOLD) -2000 Honda CR-V(daily)
#78793, "RE: weird knocking noise NOT fuel related...come in and discuss!!!" In response to Reply # 9 Oct-29-04 12:19 PM by tim97rs
does it almost from 1-2 psi all the way up! This morinig (frosty) tick tick tick, few hours later and a bit warmer... no tick tick tick!
USED TO HAVE...Everything you wish you had, and then some...
You are somebody special Tim, you matter! - from the admins (but nobody likes you, because your username is just like that other guy's, and you whine a lot)
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Are you sure the sound is inside your motor? I was almost ready to pull my motor again to check things out before I found out it was no big deal. I'm not very familiar with the 034 setup so I'm not sure what to tell you. How do your egt's look? If their not to high while your boosting I'd start to look else where for the problem.
