I've almost lost my patience with this car, I'm so tempted to sell it right now and get a 240sx, its just this damn part throttle knock, its fracking pissing me off! I've posted here, dsmtuners, dsmtalk and the yahoo phantom knock group and no one has really helped me to I'm begging for help, please!!! So heres it is, I'll try to make it simple and easy to understand.
Problem 1: While accelerating from a stop in 1st, 2nd and 3rd gear I will get knock, enough that the car will hesitated and buck a little. It started off only been periodic where now its almost constant, yet the knock varies, sometimes 43 counts, sometimes 15 counts and sometimes, yet rarely no knock. If I floor it the car while its knocking like this it boggs and the knock stays, but slowly goes down. If I floor it when there is no knock to start it pulls fine. I've noticed that the knock seems to come on from 2600-3300, after 3400rpm it looks like it drops off slowly, its generally that range that it happens.
Here are some TMO logs of what I'm talking about.
http://www.pbase.com/image/20869006 http://www.pbase.com/image/20869065 Problem 2: When crusing in 5th gear or even 4th in the 3000-3500rpm range at steady throttle out of nowhere it will knock 43 counts and hold like that until I let off the throttle or it will just drop off all by itself.
If I let off the throttle and give it throttle again the knock will climb right back up, I have to completely let off for a second or two then give it gas again and it will go away for a bit.
Here are some more logs of what problem 2 is:
http://www.pbase.com/image/20869013 http://www.pbase.com/image/20869063 http://www.pbase.com/image/20869011 What I've done to try and fix all this:
- First I played with my fuel trims, up and down, no change, right now its at 100% for all 3 trims.
- Then I got the new 3g lifters since the old ones were ticking, no change at all.
- Took EGR blockoff plate and put original one back in, still no change.
- Cleaned carbon put of combustion chamber, all clean now...no change.
- New plugs and wires
- New coil pack
- Base timing at 5*
- Knock sensor was replaced 1 month before this started
- Adjusted TH points on AFC from 30 lo 70 hi up and down and now 20 lo 60 hi and initially it helped, but then later that day got in the car and no change, still knocked.
About 3 weeks before this all started I had removed the balance shafts and filled the driver side and front motor mounts with urethane..more vibration in car now. Also replaced crank, oil pump seal, new oil pump gears and found no metal shavings in the oil pan, car still has perfect 160psi compression.
At my last oil change I did notice some fine metal flakes in the drain pan...hope its not worn rod bearings causing knock, but then again I don't hear any rod knock, just the odd injector tick.
So at this point guys I'm out of ideas and almost out of patience, so PLEASE could I get some help here, I'm desparate!!! I want my old knock free car back!!
Thanks in advance
