116 Engine Knock!

[Guest rwkw]

hey everyone, i just got a pfc installed and on high boost 12.5psi my pfc says i have 116 engine knocks.

i read the faq and it says if it reaches 60 you should worry, my max engine knock is 116, should i putt around on low boost till i get this sorted???. and how bad is engine knock??

anyhelp will be much appreciated

Rob

ps my cars a 94r33

[gun32gtr]

low boost low boost man get it tuned again then see how ya go. otherwise ya migtht kill the thing

[d00dz]

The 116 knock does it happen alot? Have you put bad fuel?

Engine knock can be nothing as the std mic's "can" pickup noise from the surroundings.. or it CAN be very bad...

So...dunno if it keeps happening id take it to get it checked out, otherwise it may be bad fuel or something that changed recently.

[Guest rwkw]

hmm, yes ill be sticking to low boost until i get this sorted then i think.

anyway thanks for your insight fellas

cheers!

The 116 knock does it happen alot? Have you put bad fuel?

Engine knock can be nothing as the std mic's "can" pickup noise from the surroundings.. or it CAN be very bad...

So...dunno if it keeps happening id take it to get it checked out, otherwise it may be bad fuel or something that changed recently.

[Guest rwkw]

no i use 98 and that v power when i can, yes it normally does reach a knock of 90!, 99, one time then 116!

ps plus the engine light flickers on and off

The 116 knock does it happen alot? Have you put bad fuel?

Engine knock can be nothing as the std mic's "can" pickup noise from the surroundings.. or it CAN be very bad...

So...dunno if it keeps happening id take it to get it checked out, otherwise it may be bad fuel or something that changed recently.

[Blitz]

hey everyone, i just got a pfc installed and on high boost 12.5psi my pfc says i have 116 engine knocks.

i read the faq and it says if it reaches 60 you should worry, my max engine knock is 116, should i putt around on low boost till i get this sorted???. and how bad is engine knock??

anyhelp will be much appreciated

Rob

ps my cars a 94r33

I will assume that you havent had your car tuned and you hammering around on the base tune.

1. Remove the Power FC and reinstall the factory ECU

2. Book the car in with a reputable tuner to have the Power FC setup correctly and your car properly tuned.

[BAMR33]

I thought my 92 was bad but 116... When does it do it, mine only knocks that bad in 3rd gear at high rpm with lots of load. At the moment I suspect my stocko fuel pump thats getting replaced with an 040 very soon.

Did you get the PFC tuned or did you just put in and drive away?

Edited December 27, 2006 by BAMR33

[dead32]

engine light is part of the operation of the pfc telling you that your car is pinging, i would be turning the boost down, who installed it? i wouldnt boost it on a base map just to be safe,

[paulr33]

have a read of the technical and advanced sections in the power fc faq in my signature, it covers the common causes of knocking and how to correct them. well worth a read and will cover your problem

[Guest rwkw]

iv had it in for 2 weeks, i got it tuned by hit man penrith. god help me if i installed the thing.

so im rather concerned with whats going on, and everyone is on xmas break so i cant put it in anywere to get it sorted out.

rob

quote name='Blitz' date='27 Dec 2006, 06:47 PM' post='2776953']

I will assume that you havent had your car tuned and you hammering around on the base tune.

1. Remove the Power FC and reinstall the factory ECU

2. Book the car in with a reputable tuner to have the Power FC setup correctly and your car properly tuned.

[Guest rwkw]

it does it if i give it a squirt while on high boost, yeh i got it tuned by hitman

I thought my 92 was bad but 116... When does it do it, mine only knocks that bad in 3rd gear at high rpm with lots of load. At the moment I suspect my stocko fuel pump thats getting replaced with an 040 very soon.

Did you get the PFC tuned or did you just put in and drive away?

[Blitz]

iv had it in for 2 weeks, i got it tuned by hit man penrith. god help me if i installed the thing.

so im rather concerned with whats going on, and everyone is on xmas break so i cant put it in anywere to get it sorted out.

rob

quote name='Blitz' date='27 Dec 2006, 06:47 PM' post='2776953']

I will assume that you havent had your car tuned and you hammering around on the base tune.

1. Remove the Power FC and reinstall the factory ECU

2. Book the car in with a reputable tuner to have the Power FC setup correctly and your car properly tuned.

Matt is a great tuner so perhaps there is something else going on thats causing the knock you are seeing.

Either way, get it checked asap

[Guest rwkw]

thanks man im reading through the pfc Faq now hopefully it can shed some light

have a read of the technical and advanced sections in the power fc faq in my signature, it covers the common causes of knocking and how to correct them. well worth a read and will cover your problem

[R31Nismoid]

Basically, just back off.

If its knocking, back off till you have time to see the tuner.

Its not major drama if your sensible about it and dont get up it every chance you can.

You can drive around. Just pay attention to knock levels.

It might be the tune, it might be something else causing it.

Only your tuner/workshop will be able to tell you how/why etc etc.

[fEkuaR]

get it looked at asap mate or you may be up for a engine rebuild, check your plugs mine were wrong gap causing knock but not that bad...

Edited December 27, 2006 by fEkuaR

[Kennedy]

switch to V power racing till you can see the tuner again.

or just reduce your timing. Pauls thread will show you how to do this

[N I B]

ive seen many PFCs with highish knock counts that when Datalogged show low counts but with a single high count and as your hand controller stores the max count you wont really know where the problem is so make sure your tuner has datalogit.

An example would be a log that counts many times a second with a count of say 8-120-8-8-8 often with the high number only coming up the one time per run but your hand controller showing this high number making you think it realy has a constant knock,This could be one missed load site with to much timing etc or as often happens some mechanical noise.

Datalogit will pin point it allowing you to find a reason for it.

If the light keeps flashing then its not a one of knock.

[BAMR33]

ive seen many PFCs with highish knock counts that when Datalogged show low counts but with a single high count and as your hand controller stores the max count you wont really know where the problem is so make sure your tuner has datalogit.

An example would be a log that counts many times a second with a count of say 8-120-8-8-8 often with the high number only coming up the one time per run but your hand controller showing this high number making you think it realy has a constant knock,This could be one missed load site with to much timing etc or as often happens some mechanical noise.

Datalogit will pin point it allowing you to find a reason for it.

If the light keeps flashing then its not a one of knock.

:sorcerer: Good point.

[paulr33]

datalogits ability to plonk knock on the map and show map tracer view of it with min/avg/max is very handy and will certainly speed up knock debugging. but as per the FAQ it can be done with just the hand controller

[Drivebai]

Could be a bad batch of fuel.. i had similar problems although my knock levels were in the 70's .. put some octane booster in there if you are really concerned until you can book in a time.

Also get a mate to watch the hand controller when you are driving.. My mate had high knock levels in his car and we found out the levels were fine when he was giving it, the knock levels only jump up when he changes gears, so he just put it don't to some mechanical noise or something.