Cb Efi Problems

Fuel Supply & Ignition Systems
rich74310
Posts: 38
Joined: Sat Feb 06, 2010 10:44 am

Cb Efi Problems

Post by rich74310 »

Hi Guys,

Wondering if you can help. I have a Cb Efi system it a quick tune. I am having some major problems with it. Basically i got it running on the car and now it runs for 20min then stops. It just pumps fuel alll the time. I have changed the coil,plugs,leads,rotor,cap plus checked all connections to the unit. Checked the grounds,battery cables,battery,alternator etc.

I was driving it the other day and it just stopped. Left it for the night and it started again no probs, ran for twenty min and stopped, then wouldnt start. I reflashed the tune and it started for 20min then stopped. Tryed eveything but it wont go now at all. Im at a loose end with it as i paid up loads of money to buy the kit and have only used it for 2000km.

The other thing is that when it was running it sounded like a misfire as it came on boost and it does it all the time. Checked the timing etc but it is now driving me mad.

I am running 42lb injectors with a t3 turbo.

Cheers

Guys

Rich :(
luftvagon
Posts: 268
Joined: Tue May 01, 2012 9:27 am

Re: Cb Efi Problems

Post by luftvagon »

Sounds like something is getting warm and stops working. Can you check fuel pressure when it stops working?
NO START = FUEL? SPARK? AIR?

Do you have spark?
Do you have fuel?
1981 Volkswagen Vanagon Westfalia - air-cooled Type4 1970cc CV (hydraulic lifters, 42x36 valves, stock cam, microSquirt FI)
1993 Ford F-250 XL LWB Extended Cab 7.3L IDI
luftvagon
Posts: 268
Joined: Tue May 01, 2012 9:27 am

Re: Cb Efi Problems

Post by luftvagon »

post a picture of your computer wiring in relationship to the engine as well...
1981 Volkswagen Vanagon Westfalia - air-cooled Type4 1970cc CV (hydraulic lifters, 42x36 valves, stock cam, microSquirt FI)
1993 Ford F-250 XL LWB Extended Cab 7.3L IDI
gearheadgreg
Posts: 298
Joined: Fri Mar 08, 2013 5:25 pm

Re: Cb Efi Problems

Post by gearheadgreg »

Is your fuel tank correctly vented?
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MarioVelotta
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Re: Cb Efi Problems

Post by MarioVelotta »

What is your IAT? Are you intercoooled? Does it go lean?
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rich74310
Posts: 38
Joined: Sat Feb 06, 2010 10:44 am

Re: Cb Efi Problems

Post by rich74310 »

Got fuel, got spark, got air. I think that lamder may be to blame. Got it started for about five min af meter on lean. Pulled the collector off and it was full of fuel.

Going to pull the engine out, rebuild it and put it all back to fresh.
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