Broken valve spring??????
Thread Starter
TECH Enthusiast
Joined: Jul 2002
Posts: 544
Likes: 0
From: Lockport,IL
Broken valve spring?????? I might have broken a valve spring question is how would i know sounds like a loud knock coming from the intake area dont think its a rod knock though. deffinetly coming from top half. <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
Teching In
Joined: Jan 2003
Posts: 7
Likes: 0
From: Irving, Texas
Re: Broken valve spring?????? Just to let you know I had this problem on Jan 1st and the sound is the same as what you decribed. I took the coil packs and valve covers off and found that a Comp Cam spring had broken in half. In turn it dropped a valve into the block. From what I have read it sounds like a problem that was due to poor quality from Comp Cam. <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" />
Re: Broken valve spring?????? how does the car idle??
I had mine at WOT and right when i let off a felt a noticeable difference in the car. I think i even heard the snap right as i lifted off from my WOT run(lucky i wasnt WOT still)
But the car started to sputter and felt as if it was running on 4cyl. I limped about a mile home and shut thw car down. I ran inside and got atap and checked the car and it had a hellova time starting up. Then under current misfire history I saw what i didnt wanna see. Cyl 4 had like 100misfires which wasnt good! Others had around 0-10max. I pulled the valve cover on that side and didnt see anything bad. Then i tryed to turn the springs and then i saw that #4 had cracked INTO! This was a comp 918 no older than 200miles.
<img src="http://www.slowls1.com/918.jpg" alt=" - " />
I didnt here any tapping, but the exhaust sounded like it had a peice of paper in it.
I had mine at WOT and right when i let off a felt a noticeable difference in the car. I think i even heard the snap right as i lifted off from my WOT run(lucky i wasnt WOT still)
But the car started to sputter and felt as if it was running on 4cyl. I limped about a mile home and shut thw car down. I ran inside and got atap and checked the car and it had a hellova time starting up. Then under current misfire history I saw what i didnt wanna see. Cyl 4 had like 100misfires which wasnt good! Others had around 0-10max. I pulled the valve cover on that side and didnt see anything bad. Then i tryed to turn the springs and then i saw that #4 had cracked INTO! This was a comp 918 no older than 200miles.
<img src="http://www.slowls1.com/918.jpg" alt=" - " />
I didnt here any tapping, but the exhaust sounded like it had a peice of paper in it.
Staging Lane
Joined: Dec 2001
Posts: 56
Likes: 0
From: Hopkinsville, KY
Re: Broken valve spring?????? I've broken 3 in the last 2 months. Never could hear anything except for the obvious miss. The second one that broke I couldn't even hear a miss. The car surged and threw a engine missfire code and then it smoothed out and ran fine. I knew what it was but I was pissed drove it another 50 miles to get home. Luckily it never did drop the valve.
Thread Starter
TECH Enthusiast
Joined: Jul 2002
Posts: 544
Likes: 0
From: Lockport,IL
Re: Broken valve spring?????? Cars at one of are sponsors now. They think its coming from the front cover or water pump <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> possibly? they dont think its valve train or bottom end which is a good thing. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
