147 1.9 JTD 8v - Consequences of a bad timing procedure - Alfa Romeo Forum
You are currently unregistered, register for more features.    
 
Thread Tools
(Post Link) post #1 of 6 Old 15-04-11 Thread Starter
Status: To err is human, but feel is divine!
AO Member
 
dusanGT's Avatar
 
Join Date: Feb 2008
Location: Novi Sad
County: Serbia
Posts: 786

Member car:

GT JTDm + Q2

147 1.9 JTD 8v - Consequences of a bad timing procedure

Is it possible that bad timing procedure has, as a result, "one tooth error" and what are consequences for the 1.9 JTD 8v engines?
dusanGT is offline  
Sponsored Links
Advertisement
 
(Post Link) post #2 of 6 Old 17-04-11 Thread Starter
Status: To err is human, but feel is divine!
AO Member
 
dusanGT's Avatar
 
Join Date: Feb 2008
Location: Novi Sad
County: Serbia
Posts: 786

Member car:

GT JTDm + Q2

Any experience or ideas?
dusanGT is offline  
Status: -
AO Member
 
Join Date: Nov 2008
Location: United Kingdom
County: Suffolk
Posts: 215

Member car:

147 JTD, YZF600R

i suspect, 1 tooth would not cause interferance.. ie.e the engine could turn without hitting.. but i think it would not run very well, either very poor performance / mpg / smoke..
stefz is offline  
(Post Link) post #4 of 6 Old 18-04-11 Thread Starter
Status: To err is human, but feel is divine!
AO Member
 
dusanGT's Avatar
 
Join Date: Feb 2008
Location: Novi Sad
County: Serbia
Posts: 786

Member car:

GT JTDm + Q2

I see that problems appeared:
https://www.alfaowner.com/Forum/engin...ing-marks.html
and I wonder: is a rough engine running (in my case) and small lack of performance sign of slightly miss the proper adjustment of mark of the crankshaft pulley...
Second question is: what is importance of proper adjustment of tensioner and idler and what is result of inadequate tension of cam belt?
dusanGT is offline  
Status: -
AO Member
 
Join Date: Nov 2008
Location: United Kingdom
County: Suffolk
Posts: 215

Member car:

147 JTD, YZF600R

Too loose could cause the belt to jump a tooth under high force. Too tight will wear out the bearings aswell as shortening the life of the belt.

To check (roughly) the tension of the belt, find the longest section between sprockets (16v would be pump > cam) get it in your fingers and you should be able to twist the belt 90 degrees. If you cant = too tight, If you can easily twist further = too loose.
stefz is offline  
(Post Link) post #6 of 6 Old 18-04-11 Thread Starter
Status: To err is human, but feel is divine!
AO Member
 
dusanGT's Avatar
 
Join Date: Feb 2008
Location: Novi Sad
County: Serbia
Posts: 786

Member car:

GT JTDm + Q2

Thanks
dusanGT is offline  
Reply

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Engines (TS, JTS, JTD & V6)

Tags
147 , bad , consequences , jtd , procedure , timing

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
So how many and where are the GTA's ??? 156GTASW Alfa GTA 608 27-10-11 09:11
My 147 boot hatch says it's open even with new switch? Software? Alf_the_Alfa Alfa 147, 156 & GT 2 26-03-11 23:15

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome