The largest and best supported Jaguar cars enthusiast site on the Internet!

Serving Enthusiasts since 1993
The Jag-lovers Web

Currently with 3,166 members

Testing and Clearing Injectors

Testing and Clearing Injectors

Hep Aldridge

Mark Harnden 86 XJ6 engine turns over, has spark but won't start.

Mark, I had a similar problem with my 85 XJ6. The car had been sitting for a long time while I rebuilt the engine. When I put it back in the car and hooked everything up, it wouldn't start. Had 35 lbs of of fuel pressure at the rail, spark that would singe the hair of a donkeys tail 50 yards away but it wouldn't start. Also no fuel smell after spinning it over numerous times. Turned out I had 4 injectors clogged, only two were spraying fuel. I rigged a neat little gadget with a flashlight and an old injector plug off another engine. 2.5 to 3 volts will open the injector, so I wired the plug with about 6 inches of lead to the tail end of the flashlight and hooked it up to the light switch. When you turn on the flashlight you get 3 volts at the plug. I pulled my injectors(still hooked to the fuel rail) pressurized the system and then hooked my little gadget to each injector the ones that were stuck did nothing, the ones that were good sprayed a nice stream of fuel. I removed and cleaned the stuck ones with carb cleaner, flushing it through the the injector with 30 psi air pressure, opening and closing them with my Gadget till they flowed free. Took about 40 minutes to do the job and saved me a bunch of $$$$$$. As soon as I started turning the engine over with clean injectors you could smell the fuel right away. Engine started and has been running great ever since. I've got about 250 miles on it so far. Hope this helps.

Looking for or selling Jaguar Automobilia? Then use our absolutely free Jaguar Collectibles Exchange! Got some pictures you would like to share with other Jag-lovers?
Then try our automated Photo Album and post some images!


Please help support the move to the new site, and DONATE what you can.
A big Thank You to those who have donated already!



Go to our Homepage
Improve your Jag-lovers experience with the Mozilla FireFox Browser!

  View the latest posts from our Forums via an RSS Feed!

Jag-loversTM Ltd / JagWEBTM 1993 - 2024
All rights reserved. Jag-lovers is supported by JagWEBTM
For Terms of Use and General Rules see our Disclaimer
Use of the Jag-lovers logo or trademark name on sites other than Jag-lovers itself in a manner implying endorsement of commercial activities whatsoever is prohibited. Sections of this Web Site may publish members and visitors comments, opinion and photographs/images - Jag-lovers Ltd does not assume or have any responsibility or any liability for members comments or opinions, nor does it claim ownership or copyright of any material that belongs to the original poster including images. The word 'Jaguar' and the leaping cat device, whether used separately or in combination, are registered trademarks and are the property of Jaguar Cars, England. Some images may also be Jaguar Cars. Mirroring or downloading of this site or the publication of material or any extracts therefrom in original or altered form from these pages onto other sites (including reproduction by any other Jaguar enthusiast sites) without express permission violates Jag-lovers Ltd copyright and is prohibited
Go to our Homepage
Your Browser is: CCBot/2.0 (, IP Address logged as on 26th May 2024 22:00:30