• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

Bent pushrod and broken valve spring?

brokenmercy

brokenmercy

New member
I bought my 95 Pontiac Grand Prix SE 8 months ago. When I got it, it had a blown intake manifold gasket. Replace that. Now, two nights ago, I finally got to drive it since I bought it. I was coming home after driving 12 miles, went halfway over a bridge, and my car died completely except for the lights. Coasted into the gas station on the other side and thought "Maybe it's just because it was sitting for a while". Tried to crank it again but it sounded like it was not getting any gas. I thought "Can my timing belt go out that quick without any notice?". Then, I had my boyfriend crank it [after pumping it to death XD] got out and listened because it was knocking. It was coming from the top part of the engine. I got home yesterday after work and pulled the top front valve cover off, because it was the easiest to get to without taking the whole intake off. [My motor is a side mounted motor NOT FUN lol] I found that the valve first on the left was not on the spring it was turned off of it, and underneath that was a bent pushrod. I then looked at the others and noticed that 3 valves down, the spring was snapped. I pulled it apart and that pushrod was fine. I also found some small chunks of metal inside sitting at the bottom of the valve cover. I went to Advance today and figured maybe I can cheat the system a little until I get more money and just buy a new pushrod and spring. They said, just to be safe, I should pull the intake and the head to make sure there is not metal shavings inside there and that if there is, they will tear up my cylinders. I was talking to someone today and told them that, and they said that I could pour diesel into the oil and it would take all the metal shavings away, then drain that and put cheap oil in it and crank it and put some motor treatment in it and let it run for as long as the directions say and then drain that and put new oil in it. I was sketchy about that. So I am asking, has anyone heard about that before? and is there a possibility that from the coolant inside the oil caused the camshaft to mess up, causing this damage?
 


coolant in the oil will destroy bearings like theres no tomorrow, dont think thats the issue though. if i were you, i'd check the timing, maybe the chain stretched and jumped a tooth, if so, you need new chain and slides. as far as the diesel, i dunno...im a mechanic by trade and just clean **** the real way, lol
 
My stepdad has a bent pushrod only in his SBC and we are trying to find out why too. ill be watching this thread.
 
diesel does a good job degreasing stuff but as with removing metal shavings i dunno. its not like metal is attracted to it or anything. are the 3.4 interference engines?
 
Yeah someone mentioned the timing belt causing it, but I was not sure. Is there anything else that might cause this like possibly the Camchaft being messed up from coolant sitiing in the oil for so long?
 


if the timing belt did break then yes it would smash stuffs. valves will be open when cylinders come up and clankity clank. bent and broken valves and bent pushrods. only way you will know is to start tearin down. coolant will wash oil off bearing and such but i dont think bent valves and pushrods would be the result. more like trashed cam bearing.
 
1. Our cars have chains
2. broken timing components doesnt always mean broken valves

as far as crankshaft issue, you would have heard some wicked noise when the bearing was starting to give
 
You must log in or register to reply here.
Back
Top