astroinc New Member 23 Member For: 20y 8m 25d Posted 26/02/12 11:18 PM Share Posted 26/02/12 11:18 PM Hi ,I was just wondering if anyone could tell me what I am hearing under load from the engine.I have had a custom tune in the FG auto for about 6 months now which I have been very happy with. Last week when I was driving home, I was going up a slight hill when I noticed what sounded like diesel chattering or the sound when you are driving a manual in too higher gear at about 1.5-2K rpm, just before the gears changed down, then disappeared when the higher revs and lower gear kicked in. I was able to replicate the sound by locking in a higher gear while going up hills. It seems to disappear on level cruising and slightly appears when the current gear is starting to be loaded before kicking down. It was also about 35 degrees when I first noticed it, but has been doing it in the mornings around 20 degreesThe noise appears to come from the engine not the gear box.Does anyone know what this could be? Any help would be greatly appreciated. Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 2m 8d Gender: Male Location: Perth Posted 26/02/12 11:25 PM Share Posted 26/02/12 11:25 PM does it sound like marbles rattling in a tin can? Sounds like it could be pinging or could also be an exhaust leak, either way stop driving it in a manner that causea the noise and get your tuner to look at it! Link to comment Share on other sites More sharing options...
wa g6et Member 657 Member For: 13y 5m 29d Gender: Male Location: Perth NOR Posted 26/02/12 11:26 PM Share Posted 26/02/12 11:26 PM Pinging! Bad fuel maybe if it has only just happened. I wouldn't be trying to replicate this too often, not good for the engine. Link to comment Share on other sites More sharing options...
astroinc New Member 23 Member For: 20y 8m 25d Posted 26/02/12 11:53 PM Author Share Posted 26/02/12 11:53 PM Thanks Guys, I have put it back to stock while I try some different fuel for a couple of weeks, then I will try the tune again to see if it was dodgy fuel. If its still there, I will book it into the tuner for a look. It also hasn't been boosting as hard as it normally does, could this be due to an exhaust leak before it reaches the turbo? Link to comment Share on other sites More sharing options...
Guest XR09 Guests Posted 27/02/12 04:13 AM Share Posted 27/02/12 04:13 AM Sounds like mr Timing is a little too far advanced ??? cant retard enough and causing pinging. That's not good. Link to comment Share on other sites More sharing options...
mic Donating Members 1,725 Member For: 16y 10m 13d Gender: Male Posted 27/02/12 10:34 AM Share Posted 27/02/12 10:34 AM octane booster. Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 1m 5d Gender: Male Location: Perth Posted 27/02/12 11:09 AM Share Posted 27/02/12 11:09 AM DETONATION. Don't let it continue. Link to comment Share on other sites More sharing options...
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