I need some good ideas to determine what I am hearing. About 10,000 miles ago, I put a rebuilt head on my 1.6N/A which has about 250,000 miles on the block. It has always started without heat in single digit temperatures. A few months ago, it started with an unusual tapping or clicking sound. It got a little quieter after a minute or two so I drove it home. Since then, I took the head off and looked at the valves but saw nothing obvious. I re-assembled the engine. The sound is still there but is not too obvious until the rpm is up. The other day I was driving it going down a hill at 25 to 35 mph and noticed the sound disappeared when I was coasting but came back when I started giving it fuel again. (Prior to removing the head, I checked compression and it was good if not a little high. )
Is the the valves or the block? Is there a good test to try?
Engine Noise
Moderator: Fatmobile
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- Turbo Charger
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Re: Engine Noise
Did the enging get timed by the book? Injectors matched? Piston clearance to head checked?
Have a nice day.
'91 Jetta ECOdiesel TD - clean & complete (less motor/tranny) for sale
'82 Westy Vanagon 1.9 N/A - 23.5mpg
'86 Jetta TD - 45-50mpg
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'94 Passat wagon VR6
'03 Jetta TDI wagon 230K, 52.3mpg
'89 Jetta N/A - 51mpg
'82 Caddy 1.6 N/A - Sold
'91 Jetta ECOdiesel TD - clean & complete (less motor/tranny) for sale
'82 Westy Vanagon 1.9 N/A - 23.5mpg
'86 Jetta TD - 45-50mpg
'81 Dasher Wagon 1.6 N/A - 52mpg
'84 Wasserboxer - DOA, parts donor
'94 Passat wagon VR6
'03 Jetta TDI wagon 230K, 52.3mpg
'89 Jetta N/A - 51mpg
'82 Caddy 1.6 N/A - Sold
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- Global Moderator
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- Location: north central Iowa
Re: Engine Noise
Could be an injector if it only sounds when fuel is applied.
'91 Golf gasser converted to a 12mm pump, M-TDI.
'84 1.6TD Rabbit with a VNT-15 turbo, still setup to run on vegetable oil.
'84 GTI with 1.7TD pistons and intercooled.
2003 TDI wagon
2000 TDI Jetta.
'84 1.6TD Rabbit with a VNT-15 turbo, still setup to run on vegetable oil.
'84 GTI with 1.7TD pistons and intercooled.
2003 TDI wagon
2000 TDI Jetta.
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- Glow Plug
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Re: Engine Noise
It was timed by "the book". Glow plugs were replaced with rebuilt ones.
Re: Engine Noise
where can I get my glow plugs rebuilt? Haha, just kidding
81' Scirocco 1.6D (conversion)
86 Golf 1.6D
85' 300TD
86 Golf 1.6D
85' 300TD
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- Glow Plug
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- Joined: Wed Sep 02, 2015 6:10 am
Re: Engine Noise
OK, oops, Injectors were rebuilt.
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- Global Moderator
- Posts: 7564
- Joined: Wed Oct 30, 2002 10:28 pm
- Location: north central Iowa
Re: Engine Noise
Better to time it by ear than by the book.
'91 Golf gasser converted to a 12mm pump, M-TDI.
'84 1.6TD Rabbit with a VNT-15 turbo, still setup to run on vegetable oil.
'84 GTI with 1.7TD pistons and intercooled.
2003 TDI wagon
2000 TDI Jetta.
'84 1.6TD Rabbit with a VNT-15 turbo, still setup to run on vegetable oil.
'84 GTI with 1.7TD pistons and intercooled.
2003 TDI wagon
2000 TDI Jetta.