Annoying Pinging

[R33S2]

Can anyone suggest any/all causes for pinging as my tuner is is going crazy.

I am running a Microtech MT12 on BP ultimate and have a ping at the 5500 and above, he retarded the timing still there, changed timing belt still there, removed the cat no change, tryed a different crank angle senor still there. I cant think of anything else to change if youz can it would be greatly appreciated.

[180bfj20det]

Need more info. What boost are you running? What turbo are you running? Intercooler? Whats your blow by like? Have you checked how much oil you have in your intercooler piping? Maybe your cam timing is wrong?

Seb

[Kaido_RR]

hmm,

maybe your fuel pump has is dieing?

maybe the tune is shit house?

[RB30-POWER]

Carbon hot spots on the pistons or maybe a single faulty fuel injector not injecting enough fuel under high pulse widths from being clogged.

Thats the only reasons i can see why it would ping consistantly regardless of timing settings etc. Both these situations are rare but very possible and a hard to identify.

Sounds like your mechanic has checked all the other basics. Fuel pressure, Inlet temperature, cam timing, exhaust back pressure etc etc?

Really need to know a bit more about what setup you are running to help more?

[cole_trx]

fuel filter? was this on my excel

[R33S2]

I have new walbro fuel pump, new filter and malpassi regulator.

180bfj20det- I am running 1bar boost, standard r33 turbo, large FMIC with 2 1/4" piping and no blow by we can find, will check for oil today. Thanks

RB30-POWER will check plugs again but injectors or carbon sounds like likely suspects to me will endeavour to check these.

Thanks for your replies

[rob82]

Whats your static timing? You may not be able to get enough timing out of it as the lowest timing you can go with a Microtech is static. Do a data log at full noise and check to see if the timing is whatever your static is; if it is reduce you static timing.

[R33S2]

rob82 Thats how the problem started we kept retarding untill there was no more adjustment

[R33S2]

Problem found! The drive pulley keyway, off the crank, for the timing belt was loose giving the error readings fixed that and runs smoothas got 278rwhp.

Thanks again for all suggestions.