x24-7x

I bent 3 valves so I replaced the heads and have adjusted the valves twice (going by the adjustments from the haynes manual)and now the car is running like it did when they were bent. Which is it will barely run roughly and only when at WOT. There is one plug wire off of a truck on there because mine burnt up..any ideas?

96capricemgr

How did you find zero lash when you adjusted the valves?

x24-7x

tightened them untill there was no play in the rod

96capricemgr

No vertical play right? They were on the base circle too right, seen guys mistake number 6 TDC for number 1 TDC and that causes big problems. Yes technically they are at TDC at the same time just different strokes.

x24-7x

Right, no vertical play. Number one was on TDC . So we tightened numbers 2,5,7 intake valves and number 3,4,8 exhasut valves. Then turned crank 360 and adjusted 3,4,6,8 intake and number 2,5,6,7 exhaust. All were tighted till no play and then tightened 3/4 turn.

x24-7x

if anybody could help quickly id appreciate it because im ready to blow this car up.lol

gatorhead

It could literally be any number of things from a vacuum leak to an uplugged sensor, bad wire or even loss of compression. Did you check compression on those cylinders where you experienced the bent valves? It is possible there was damage to the piston or the rings.

You have to be as detailed as possible about how it is running explaining that it ran as bad as when you bent the valves does nothing for someone who never heard it run that way

x24-7x

Pretty much, it would only run at WOT and that was barely..and sometimes it would idle but it was so rough it would barely stay runnin and like it had the worse miss in the world in it. Now it will only run at WOT. After adjusting the valves we did feel on the rods to see how tight they were..and i believe we are not supposed to do that..could that be the problem?

popstoy

check and make sure your maf wires arent loose chck for leaks in your air intake and check your diaphram on your egr valve make sure it isnt stuck.

pizzi-man

I think you have your valves adjusted too tight. you adjusted and collapsed the lifter and then another 3/4 turns. you better loosen all the rockers before you bend valves again

x24-7x

Iv got all the EGR junk deleted. Then how should the valves be adjusted. I thought it was 3/4 turn after zero lash??

pizzi-man

zero lash is when the push rod just hits the plunger on the lifter. Then it's another 3/4 turn. If you collapse the lifter then it's like running solids which is not a good idea. You add another 3/4 turn to collapsed lifters and your holding the valves open

x24-7x

i adjusted it will there was no play in the rod. then went 3/4 turn more. isnt that right?

FireChicken1995

try it again at 1/4 turn after zero lash 3/4 is ALOT.

pizzi-man

I have to ask if you really understand what zero lash is.