ka24e tick... Not lifters!
Ok guys, i have a good one for you. This shit has me stumped!
Everything is pretty much listed in my build thread (Lucky13garage's bank account), but i dont get too many visitors and im stumped so i figured i would ask.
I just recently re-did my timing guides and my tensinor. The chain was never moved and lined up prefect with the crank and the cam. It still does to this point.
New timing guides
New timing cover
New oil pick up tube
New water pump
All gaskets and oil seals replaced, and i mean ALL of them
L28 oil pump upgrade with gasket
Before i tore my motor apart it ran great aside from the fact the timing chain was rubbing on the coolent passage via the driver side due to a broken timing guide and worn tensinor. Tore everything apart, installed all my parts ( I like to pay decent attention to detail) and reassembled. I had a tick at first, which i didn't find odd seeing as how the motor was down for a good month and i figured the lifters needed time to prime. The tick never went away, and procedded to get worse. Being scared, i tore everything apart a second time, double checked my work and re-installed everything with new gaskets.
The tick remains.
Me and a buddy have tracked the sound down to the fuel system with a stethescope. It's comming from every injector, some more than others and i can faintly hear it in the fuel rail. I say again, the initial timing was never touched, and lines up prefect to this moment. It's also a very loud tick... With the hood closed and the car sitting about 50 or 60 feet away from the garage its noticable, and very annoying.
It rises with load and RPM's, which correct me please if i am wrong but the injectors fire faster with a rise in engine speed... So it is possible for this sound to be the injectors. What has me is how loud and completley random this is. It never did this before i tore it apart is what i mean by random. The sound never decreases, only when i retard the ignition timing and when i advance it the sound gets worse which leads me to belive its a part directly affected to the rotation of the motor.
With the engine running i remove the oil filer cap and the sound gets no worse or no better. Now i can safley assume it is not a lifter problem..... Right? With the motor running i pulled each cylinders plug wire carfully and the sound presummed to get a TINY bit better but stayed no matter what wire i had dissconected.
There is no sound comming from the exhaust manifold anywere in the system that even remotly sounds like this. (There is a small leak from the downpipe to the header).
My thought is the Fuel pressure dampner, but i cannot seem to find any solid proof of a damper beyond my theory that the FPR doubles and a damper for this motor. I see no other possible way or place for a damper on this system, and the OEM fuel delivery pump from what i can find does not come with one, nore is there one in the tank.
Sorry for the headace, but you can only imagine how my head feels. There are a couple guys around the web who are also experincing this problem, most being ka24e's in 510 datsons and such... We are really stumped, and i just dont think an injector could get that loud no matter how old it is.
There is a link to some videos of this problem on the ka24e in a 510 in my build thread. PLEASE! Any help period would be appreciated! Help us out guys and gals!
Single slammer love