Author Topic: 1.6TD injector spray pattern  (Read 2858 times)

December 14, 2018, 08:05:31 pm

Huc

  • User+

  • Offline
  • *

  • 34
1.6TD injector spray pattern
« on: December 14, 2018, 08:05:31 pm »
https://imgur.com/a/vEGYITB

The spray pattern differs a bit between my injectors. They both pop around 2000psi. The Bentley says "check that the injector sprays in an even, compact cone pattern...". How compact/narrow should it be? I'm worried that an incorrect spray pattern can damage the precups, but the Bentley isn't very specific on what the spray pattern should look like.

Reply #1December 14, 2018, 08:25:11 pm

libbydiesel

  • Global Moderator
  • Veteran

  • Offline
  • ****

  • 3399
Re: 1.6TD injector spray pattern
« Reply #1 on: December 14, 2018, 08:25:11 pm »
Those are both fine provided they both pop cleanly at a similar pressure and don't pee streams below the pop pressure.

Reply #2December 14, 2018, 11:26:53 pm

fatmobile

  • Veteran

  • Offline
  • ***

  • 2926
    • http://www.geocities.com/vwfatmobile/
Re: 1.6TD injector spray pattern
« Reply #2 on: December 14, 2018, 11:26:53 pm »
"and don't pee streams below the pop pressure."
I bought some new bosch injector inserts,..
 and they pissed worse just before breaking pressure than some of the old injectors I have.
They were made in brazil ,.. I'll buy india made nozzles next time.
Tornado red, '91 Golf 4 door, with M-TDI 12mm pump, south bend clutch, VNT-15 turbo, 02A trany
MK4s: 2000 TDI jetta, 2003 TDI wagon, 2000 golf 2.0 gasser.
'84 Rabbit with 1.7TD KY block pistons bored to 80mm, VNT-15
'84 GTI with stock 1.6TD starion intercooler.

Reply #3December 15, 2018, 01:17:39 am

Huc

  • User+

  • Offline
  • *

  • 34
Re: 1.6TD injector spray pattern
« Reply #3 on: December 15, 2018, 01:17:39 am »
Those are both fine provided they both pop cleanly at a similar pressure and don't pee streams below the pop pressure.

Thank you very much for your help

Reply #4December 15, 2018, 02:16:32 am

smutts

  • Veteran

  • Offline
  • ***

  • 720
  • Personal Text
    ClackClackClackClackClack
Re: 1.6TD injector spray pattern
« Reply #4 on: December 15, 2018, 02:16:32 am »
Quote
I bought some new bosch injector inserts,..
 and they pissed worse just before breaking pressure than some of the old injectors I have.
They were made in brazil ,.. I'll buy india made nozzles next time.

Sigh....... ::)
It is just miserable having to wade through so much dross these days, parts wise.
Badge engineering didn't die with British Leyland unfortunately.