Login
▼
Register
Home
Help
Advertise
Login
Register
VWDiesel Blog
Facebook Group
VWD on Twitter
VWDiesel.net The IDI, TDI, and mTDI source.
»
Engine Specific Info and Questions
»
IDI Engine
(Moderators:
malone
,
burn_your_money
,
Vincent Waldon
,
theman53
) »
Newly Rebuilt Injector Pump is Unusually Loud
« previous
next »
Print
Pages: [
1
]
Author
Topic: Newly Rebuilt Injector Pump is Unusually Loud (Read 1519 times)
April 08, 2009, 02:16:37 pm
bluemotion
User+
Offline
22
Newly Rebuilt Injector Pump is Unusually Loud
«
on:
April 08, 2009, 02:16:37 pm »
I just installed a newly rebuilt 85 Golf NA injector pump from a local shop and the engine is unusually loud. At 1mm of timing, the diesel knock is very loud. I can retard the timing to quiet the engine down, but I'm not sure if that is the best idea. What do you guys think? I don't understand how a 1mm timed pump can cause an engine to be louder or more quiet after the timing of the pump was checked.
Logged
Reply #1
April 08, 2009, 02:40:10 pm
rallydiesel
Veteran
Offline
1880
Newly Rebuilt Injector Pump is Unusually Loud
«
Reply #1 on:
April 08, 2009, 02:40:10 pm »
Was this from a Bosch shop? If they aren't very good, they may have replaced stuff that will affect timing adjustment (plunger spacer too thick, timing plug too long, different exit banjo with too small a hole, etc....).
Logged
2006 Jetta TDI - gtb1749v, Malone 2, Frank's Titan 2 cam, VR6 clutch....
1991 Jetta TD - sold
2001 Golf TDI - Son's
1981 Rabbit - BEW tdi swap project
"ONCE YOU GO CLACK, YOU NEVER GO BACK"
Reply #2
April 08, 2009, 02:46:49 pm
bluemotion
User+
Offline
22
Newly Rebuilt Injector Pump is Unusually Loud
«
Reply #2 on:
April 08, 2009, 02:46:49 pm »
The strange thing is that the pump is loud at idle and low RPM's. At idle, there shouldn't be a timing curve.
Logged
Reply #3
April 08, 2009, 05:10:37 pm
burn_your_money
Global Moderator
Veteran
Offline
8999
Personal Text
Bright, On
Newly Rebuilt Injector Pump is Unusually Loud
«
Reply #3 on:
April 08, 2009, 05:10:37 pm »
A fresh pump should be ok timed at 0.90-0.95mm How far down do you have to retard it to get it quiet?
Logged
Tyler
Print
Pages: [
1
]
« previous
next »
VWDiesel.net The IDI, TDI, and mTDI source.
»
Engine Specific Info and Questions
»
IDI Engine
(Moderators:
malone
,
burn_your_money
,
Vincent Waldon
,
theman53
) »
Newly Rebuilt Injector Pump is Unusually Loud