Boosted_Falcon Member 86 Member For: 12y 6m 1d Gender: Male Posted 20/05/13 09:43 AM Share Posted 20/05/13 09:43 AM Hey fella's how are ya?Just thought I'd post this up incase anyone has came across this before and hopefully see if others are experiencing it.My engine has developed a knocking or tapping noise in the engine when clutch in or neutral ( no load)in the lower rpm range.BA 02 with FG bottom end, oil pump gears and FG cams.it started happening during the re-tune apparently (caminstall), you can mainly hear it when the engine is warm and being turned on in the initial rev climb then settle, and also when you tap the throttle to make it climb to 3000-2000 and when the revs stop at 3k you can hear it then as the rpm drops you can hear it clearly.As I was saying before, iv only heard this noise when it is warm.my first thought was idler/tensioner, replaced both, noise was still there. Seems to be coming from the timing case.then I thought timing chain slap maybe or a guide was broken or maybe the oil feed filters at the vct were blocked so I pulled the rocker off this afternoon after work and cleaned the oil supply "phasers" (not sure on proper name) to find they dont have filters on my model so cant be that. All the lifters seem fine and valve springs, timing guides seems to be sitting right, the chain doesnt seem to have much slack, 3mm or so maybe as a guesstimate.Just wondering if anyone has came across this before but if not then some advice would be awesome!cheers, damien Link to comment Share on other sites More sharing options...
Henz Tampon inserted, Auto Acquired, next purchase a new handbag Donating Members 9,946 Member For: 16y 10m 11d Gender: Male Location: Vic Posted 20/05/13 09:52 AM Share Posted 20/05/13 09:52 AM Does it still do it with clutch fully engaged? Link to comment Share on other sites More sharing options...
Boosted_Falcon Member 86 Member For: 12y 6m 1d Gender: Male Posted 20/05/13 10:06 AM Author Share Posted 20/05/13 10:06 AM its hard to hear engine noise when driving as exhaust can be a bit distracting on decel,but im pretty sure iv heard it while the clutch is engaged while trying to listen while slowing down. mainlyin 2nd or 1st because that is only rea ltime I can hear the engine. Link to comment Share on other sites More sharing options...
Mr_4.0 Member 1,096 Member For: 14y 11d Posted 20/05/13 01:39 PM Share Posted 20/05/13 01:39 PM Sounds similar to the piston slap noise I get on a free rev with my forged pistons. Link to comment Share on other sites More sharing options...
jas98 Member 1,046 Member For: 12y 6m 8d Gender: Male Location: Maryborough Qld Posted 20/05/13 03:52 PM Share Posted 20/05/13 03:52 PM do the vct phasers on a ba xr6t have a filter? Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 7d Gender: Male Location: Perth Posted 21/05/13 01:08 AM Share Posted 21/05/13 01:08 AM ^yes Link to comment Share on other sites More sharing options...
Boosted_Falcon Member 86 Member For: 12y 6m 1d Gender: Male Posted 21/05/13 08:47 AM Author Share Posted 21/05/13 08:47 AM hmmm...I couldnt see any filter... are they usually in the tunnel or over the holes on the tunnel wall?So piston slap can sound like very loud tapping/knocking? I havent heard it before the tune and iv had the fg bottom end in for over a year,tune was 1 month ago. Link to comment Share on other sites More sharing options...
Mr_4.0 Member 1,096 Member For: 14y 11d Posted 21/05/13 12:49 PM Share Posted 21/05/13 12:49 PM Inbox me Friday to remind me and I'll post a video up of my cold start piston slap. It's brutal. My free rev overrun tapping probably won't come through the microphone very well but sounds similar to how your describing. Link to comment Share on other sites More sharing options...
Kroozin Menace Donating Members 1,990 Member For: 13y 9m 9d Gender: Male Location: Sydney Posted 21/05/13 01:32 PM Share Posted 21/05/13 01:32 PM (edited) The filter is on the phaser/solenoid itself. Edited 21/05/13 01:34 PM by Kroozin Link to comment Share on other sites More sharing options...
Boosted_Falcon Member 86 Member For: 12y 6m 1d Gender: Male Posted 22/05/13 08:48 AM Author Share Posted 22/05/13 08:48 AM well I guess I dont have them:Smight grab a new BA phaser from parts to see the set up and how mine is different.so piston slap is bad I see but you mentioned it happens when its cold? my noise happens when its warmed up and turned on when warm. might see how much these phasers are because some fella's at work say it sounds alot like buggered phasers but we will see I guess.thanks for the comments anyways ill keep looking! Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now