FORUM CLASSIFIEDS DIFFLOCK.com Links & Networks
Forum Homepage
Log in
Profile
Search
Private Messages
Forum Members
Register
Classified Ads
Search Ads
Place New Ad
My ads
Place your classified
ads here for FREE
NB: Adverts placed in the general
forum areas will be deleted
Difflock Homepage
Online Shop
Contact Us
FAQ
Calendar
Garage
Facebook
Twitter
Youtube
Advertise With Us - Reach your target market by advertising on the Difflock.com forum.
Click here or call 0845 125 9407


ECU

 
 
Post new topic   Reply to topic    Difflock Forum Index -> Electrical, Comms and ICE
View previous topic :: View next topic  
Author Message
Steven
Just got MTs


Joined: 14 Oct 2006
Odometer: 344




PostPosted: Sat Jun 23, 2007 7:50 pm    Post subject: ECU Reply with quote

Just fitted a Cavalier single point injection engine in my Blitz.

The engine turns over and sparks at the plugs, but it will not fire unless
I pour petrol in to the intake.

When the ignition is on there is 12 volts at the injector with out the engine turning over is this right?
I have tried one of these cheap diagnostic fault finders the only fault it reads is 81 injector valve -voltage high.

Does any one know what I have missed as the engine was running before I fitted it Embarassed

Cheers Steve.
Back to top
View user's profile Send private message Send e-mail
gbaz
Just got MTs


Joined: 09 Aug 2005
Odometer: 478
Location: Alton Hampshire



PostPosted: Sat Jun 23, 2007 9:07 pm    Post subject: Reply with quote

Dont know about your injector voltage. The only advice i can give is, is your fuel pump delivering enough pressure? I have just fuel injected my sammy and it wouldn't run at first because i had fitted too weedy a pump.
Back to top
View user's profile Send private message
Steven
Just got MTs


Joined: 14 Oct 2006
Odometer: 344




PostPosted: Sun Jun 24, 2007 8:52 am    Post subject: Reply with quote

I think it delivers enough pressure as it is the same pump as was in the cavalier although it doesn't appear to build pressure it just returns to the tank.
Back to top
View user's profile Send private message Send e-mail
gbaz
Just got MTs


Joined: 09 Aug 2005
Odometer: 478
Location: Alton Hampshire



PostPosted: Sun Jun 24, 2007 9:43 am    Post subject: Reply with quote

If you are using the cavalier pump i doubt that you have a problem there.
Back to top
View user's profile Send private message
nivapilot
Guest








PostPosted: Sun Jun 24, 2007 8:40 pm    Post subject: Reply with quote

Injectors are switched on the negative side, from the ECU, so you should have 12 volts on one side. Check with either a "Bosch" injector checker, or an LED attatched to the negative side..it should pulse during cranking/running as the negative is switched.

Fuel pump should be able to pressurise the rail, and only excess pushed back to tank, via the pressure regulator, you could have a problem on that side of things?
Back to top
Steven
Just got MTs


Joined: 14 Oct 2006
Odometer: 344




PostPosted: Wed Jun 27, 2007 6:30 pm    Post subject: Reply with quote

Ok cheers for that so far going to get an LED tomorrow.

I thought the pump should be able to pressurise but there wasn't a regulator on the car the engine came from I can quite easily blow through
the return fuel line.
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
Post new topic   Reply to topic    Difflock Forum Index -> Electrical, Comms and ICE All times are GMT - 12 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot post calendar events in this forum
Oil Safe

Facebook

Specialist Tools

Evo Oils

Adrian Flux 2023

Join our mailing list for upcoming events, special offers, discount coupons and expert advice on the latest 4x4 products!

* indicates required





    
Powered by phpBB © phpBB Group