Another knock thread..

[Vince]

Here we go. Last week the car is running sweet, pulling every gear
to 7500, no hesitating whatsoever. This week, I get a Full Throttle
AFPR and a Digitaltuning Knockbox. Now I give the car any throttle,
knock goes 20 and over everytime. On the freeway cruising at 65,
it will see 40 counts until I let off the gas pedal, let it go back to zero
and roll back in to it, but starts knocking again. Its definetly pulling timing, feels like poopy. IF I rev it in neutral, it will see 20 or more,
also. I bought a new Mitsu knocksensor, didnt help. Different ECU,
nothing. Tried richening and leaning on my translator, nothing.
The problems started when I put the AFPR on, almost immediately
didnt feel right ever since. Started at 38 psi with hose off, now at
43, still the same.
The car has a brand new head with brand new valvetrain, no lifter
tick, compression is good, dosent smoke idles the same as ever.
New plugs tonight with the different ECU, same.
Kinda long but I wanted to give all the details so someone can help.

 

[92awddsm]

What shape is the bottom end in. Could be a rod bearing beginnig to fail coincedently.

 

[Vince]

Rebuilt 5000 miles ago.

 

[Vince]

So I've done some more driving and trying new things. I went thru my
timing belt to see if anything was off, and checked my pullies for anything weird, nothing. It seems like when the RPM's are low, like 2500
in say, 3rd gear, make a pull, it wont knock. But when the RPM's are higher, like 4000, make a pull, knocky knocky. Also, when I'm making a pull, when it's not knocking, the knock will be at zero, and the timing drops to 15 or lower. Shouldnt it be at least 20? Last night, I raised my fuel pressure to 50, nothing different. Somebody please help!!!!

 

[Vince]

Could a failing fuel pump be causing this????