AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
- Joined
- Jan 19, 2014
- Messages
- 24,933
- Reaction score
- 12,283
Nice work, Bugman
Try road testing with the fuel cap loose or removed. Just don't make any quick/hard right turns.It happens in drive around 2000 rpm’s. In second gear I mash the pedal %80 to the floor and it’s accelerating nice and quick. I go to %100 foot to the floor I get the stumble like it’s out of gas (rough idle and ping then engine shuts off unless I lift off the gas) and it will go no faster or move other then the momentum it has already picked up. I then lift my foot off the gas back to %80 or lower and as I am lifting (decelerating) it picks up speed as if it was to the floor. It doesn’t matter how long I have my foot to the floor or how much I push the pedal down it does this. In each gear as well as idle.
it wasn't the seal the problem , it was the oil/carbon that was baked on the intake valve that was soaking up the gas and causing a bog. stumble. back in the day the fire had that issue and the gm tab was remove the injectors and blast the carbon off with coconut sand of some sort"a" leaking valve seal won't cause a bog in any way that I can think of..... on guide knurling, I've seen it done, many times but given the less than stock surface area you have in the guides now to actually "guide the valve" and what you do have is raised/displaced much like cutting threads, it is a "weaker" repair than just reaming a little more oversized so they can press a real guide into place. so what Im saying is it'll be OK for a while but won't last as long as putting in a replacement guide.
on a /6 or on any car,I've never seen a cartooned up intake valve.