 | Home > Tdi > 300tdi booming under load????? |
 
|
|
|
| g-mack Member Since: 07 Jan 2014 Location: northumberland Posts: 1967  
|
yuup, its rather loud and very annoying.
did a little more playing today and noticed it doesn't need to be under load. so its definitely at certain rev range. doesn't matter what gear or speed, video was shot at roughly 5mph! when driving in 5th at 65 no booming at that speed, let foot off go pedal and let the engine slow it down to 40mph as the revs drop the booming starts. so it booms when accelerating and decelerating! removed cyclone breather from air intake incase there was back pressure in the air intake, nope no different. another go with air pipe off turbo (intake side) massive sucking noise but booming still there. so im ruling out induction noises! thinking about investigating engine mounts next. as this problem came on gradually and not suddenly! My 109 thread my youtube channel Last edited by g-mack on 14th Oct 2014 12:03pm. Edited 1 time in total |
||
24th Sep 2014 7:35pm |
|
| shaggydog Member Since: 12 Aug 2012 Location: Kent Posts: 3347 
|
Engine and gearbox mounts are a good shout.
Also check your exhaust rubbers and what they attach to. |
||
|
24th Sep 2014 8:13pm |
|
| g-mack Member Since: 07 Jan 2014 Location: northumberland Posts: 1967
|
update:
changed OS engine mount for new gen part, this afternoon. booming is STILL there!! 
it may be a little better though but not driven it enough to decide. suppose i will have to do other side next!! this is getting daft!!! My 109 thread my youtube channel |
||
|
7th Oct 2014 3:14pm |
|
| Fatboy Slim Member Since: 04 Feb 2008 Location: Bridgend Posts: 1006 
|
Is your cam timing ok?
|
||
|
7th Oct 2014 3:58pm |
|
| g-mack Member Since: 07 Jan 2014 Location: northumberland Posts: 1967
|
not been checked in a while, could that cause booming? My 109 thread
my youtube channel |
||
|
7th Oct 2014 4:14pm |
|
| g-mack Member Since: 07 Jan 2014 Location: northumberland Posts: 1967
|
I still have this awful booming noise under load and decided to have another crack at finding what the hell is causing it!
removed ALL associated pipe work up to turbo to eliminate vibration from it. noise still there just moved to turbo inlet!! finally admitted defeat and took it to a garage!. timing is fine engine revs freely, no smoke, no stutters or hesitation. the wastage appears to be seized closed!! so thats my next job freeing that up. the theory is gate stuck closed(more likely not tightly closed) exhaust gasses have nowhere to go and building up pressure! can anyone confirm my theory or am i just clutching at straws!! My 109 thread my youtube channel |
||
|
13th Aug 2015 4:46pm |
|
| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558 
|
Be honest i dont think the waste gate would cause that and from a seized waste gate you would get over boosting .
Waste gate can be hard to diagnose, because they dont move much at all when revved stationery as the engine isnt under any load people often think they move a lot , but revving stationery it might only move 1-3mm on the rod didnt you have the head off a while ago ? |
||
|
13th Aug 2015 6:16pm |
|
| g-mack Member Since: 07 Jan 2014 Location: northumberland Posts: 1967
|
yea had a new head on last year.
im not trying to watch the WG move, I'm physically trying to move it with force!! I'm really running out of options here My 109 thread
my youtube channel |
||
|
13th Aug 2015 6:28pm |
|
| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558
|
There on quite a strong spring ! Normally you need to use a lever to try them
Is all the pipe from filter to turbo standard ? |
||
|
13th Aug 2015 6:34pm |
|
| g-mack Member Since: 07 Jan 2014 Location: northumberland Posts: 1967
|
yep all standard.this noise is definitely coming from the inlet plenum chamber. My 109 thread
my youtube channel |
||
|
13th Aug 2015 6:47pm |
|
| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558
|
Real odd one that !
|
||
|
13th Aug 2015 6:59pm |
|
| g-mack Member Since: 07 Jan 2014 Location: northumberland Posts: 1967
|
tell me about it!!! My 109 thread
my youtube channel |
||
|
13th Aug 2015 7:21pm |
|
| g-mack Member Since: 07 Jan 2014 Location: northumberland Posts: 1967
|
right turbo all back on, pulls a little better BUT booming still there!.
off to find a nice cliff to drive off now  My 109 thread
my youtube channel |
||
|
19th Aug 2015 3:06pm |
|
| shaggydog Member Since: 12 Aug 2012 Location: Kent Posts: 3347
|
Ok so you have done New head New centre exhaust New engine and gearbox rubbers Checked timing New exhaust rubbers Cleaned intercooler and checked turbo pipework Just trying to think what is left to do or look at 
Only thing I can think of is that your exhaust is resonating with a body panel at a certain rev range. Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197 Self confessed mileage hunter  |
||
|
19th Aug 2015 6:55pm |
|
|
|
| All times are GMT |
< Previous Topic | Next Topic > |
Posting Rules
|
Site Copyright © 2006-2025 Futuranet Ltd & Martin Lewis
