I broke a pushrod today...
Thread Starter
Junior Member
Joined: Apr 2012
Posts: 13
Likes: 0
From: Corpus Christi, TX
Car: 92 Firebird
Engine: 3.1 MPFI
Transmission: 700R4
I broke a pushrod today...
Ok, here's the story:
I have a 3.1 MPFI, and I finally had it running nice and smooth, but then it developed this loud metallic knocking noise, and I narrowed it down to under my driver's side valve cover. I peel it back everything necessary to get the valve cover off, and once I removed the VC, I started to check to see if any of the pushrods were loose. one of them did, and I removed the rocker to find that the ball tip separated from the pushrod. (I will post a pic as soon as I get to a camera)
How did this happen, and would this be the cause of my knocking noise? What else should I look for?
I have a 3.1 MPFI, and I finally had it running nice and smooth, but then it developed this loud metallic knocking noise, and I narrowed it down to under my driver's side valve cover. I peel it back everything necessary to get the valve cover off, and once I removed the VC, I started to check to see if any of the pushrods were loose. one of them did, and I removed the rocker to find that the ball tip separated from the pushrod. (I will post a pic as soon as I get to a camera)
How did this happen, and would this be the cause of my knocking noise? What else should I look for?
Last edited by projectfirebird; Jun 5, 2012 at 04:05 PM.
Joined: Mar 2011
Posts: 6,287
Likes: 41
From: Northwest Ohio
Car: 1991 Camaro RS
Engine: Lq4 6.0 SBE s485 turbo E85
Transmission: Fsi th400 stage 4. TSI 5500 st
Axle/Gears: Strange S60 4:10s
Re: I broke a pushrod today...
Ok, here's the story:
I have a 3.1 MPFI, and I finally had it running nice and smooth, but then it developed this loud metallic knocking noise, and I narrowed it down to under my driver's side valve cover. I peel it back everything necessary to get the valve cover off, and once I removed the VC, I started to check to see if any of the pushrods were loose. one of them did, and I removed the rocker to find that the ball tip separated from the pushrod. (I will post a pic as soon as I get to a camera)
How did this happen, and would this be the cause of my knocking noise? What else should I look for?
I have a 3.1 MPFI, and I finally had it running nice and smooth, but then it developed this loud metallic knocking noise, and I narrowed it down to under my driver's side valve cover. I peel it back everything necessary to get the valve cover off, and once I removed the VC, I started to check to see if any of the pushrods were loose. one of them did, and I removed the rocker to find that the ball tip separated from the pushrod. (I will post a pic as soon as I get to a camera)
How did this happen, and would this be the cause of my knocking noise? What else should I look for?
Thread Starter
Junior Member
Joined: Apr 2012
Posts: 13
Likes: 0
From: Corpus Christi, TX
Car: 92 Firebird
Engine: 3.1 MPFI
Transmission: 700R4
Re: I broke a pushrod today...
It was running right, and then it developed this noise that progressively got worse.
Here is the picture of the pushrod. Sorry about the quality.
Here is the picture of the pushrod. Sorry about the quality.
Last edited by projectfirebird; Jun 6, 2012 at 08:37 AM.
Supreme Member
Joined: Oct 2004
Posts: 4,526
Likes: 238
From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: I broke a pushrod today...
Yea it happens from time to time get a new set and get it running again.
Joined: Mar 2011
Posts: 6,287
Likes: 41
From: Northwest Ohio
Car: 1991 Camaro RS
Engine: Lq4 6.0 SBE s485 turbo E85
Transmission: Fsi th400 stage 4. TSI 5500 st
Axle/Gears: Strange S60 4:10s
Re: I broke a pushrod today...
Might as well toss a nice cam in there while shes apart.. Thread Starter
Junior Member
Joined: Apr 2012
Posts: 13
Likes: 0
From: Corpus Christi, TX
Car: 92 Firebird
Engine: 3.1 MPFI
Transmission: 700R4
. 
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