Right Corners Of Death

[clean55]

Ok guys, I have a doozy for you.

This started yesterday, id never had the problem previously. Turning hard, but not super hard to the right but not the left, is causing my engine to stutter and just completely cut power. I've done a few tests and it feels to me like an ignition issue, because of the insane backfire when it comes back on once the G-forces are lessened. Ive given all the coil wiring a good shake and nothing is loose, opened up the dizzy and checked everything it appeared fine, and removed all spark plug leads and then re-inserted them. Still the issue persists.

 

Now I just want to know if anyone has come across this issue before, and anyone that can help me troubleshoot the issue.

 

I am in Brisbane and if you think you be better off helping by having a look/drive, Id be more than happy to cruise on over and see if we could solve it.

 

Thanks in advance guys!

[LittleRedSpirit]

At least you need to tell us about what engine and chassis, efi or not, any fuel or ignition system tweaks you have done etc.

 

Its a bit hard to assume all this out of thin air and it will have a big bearing on your problem.

 

If it were a fuel issue, then it could be that your carb isn't holding enough fuel in the bowl (maybe because there are contaminants under the float. Possibly you have some other sort of fuel surge if its efi depending on your set up. If its wiring you need to be more methodical than just shaking wires. Test each wire, unwrap frequently handled wiring and inspect for breaks, kinks or crushed areas.

 

It could be as simple as poorly secured wires grounding out and killing your electrical signal for the moment the g forces are applied.

 

To me it sounds like either fuel surge or g forces moving wiring

[clean55]

haha whoops 4k, standard carby all standard 4k setup :D and Ke70 sorry about that

Edited March 5, 2013 by clean55

[corollaart]

Sounds like the same effect as turning the key off ,while running.I would check your 30year old key barrel.

 

Also the connector at the bottom of the steering coloum,where all the key barrel and lights blinkers come out of the steering coloum.

 

 

 

rob

[altezzaclub]

Csn you take a light off the coil +ve and stick it on the steering column, so you can see the moment the coil lost power??

 

I saw it happen many years ago when a coil wire broke off and floated away under right-hand bends then re-touched when the car straightened up. That was on Dad's 1966 Vauxhall.

 

Don't forget to check the fuel cutoff solenoid too.

[clean55]

key barrel was replaced not too long ago so its not that. pre much I'm just going to check every wire in the ignition system including behind the barrel and see if i can find that its just a bad solder or crimp. hopefully can find out.

[carbonboy]

Is your battery secured down properly & the leads firmly attached to it?

[GJM85]

It's probably leaning out as the fuel moves away from the primary main.

Edited March 5, 2013 by GJM85

[coln72]

Could get my 5K to do this under sustained, hard cornering. the forces would stop the oil draining back into the sump and all of a sudden you would get a great cloud of oil smoke and a misfire. Staighten up and it would go away :)

[Clapped out]

It's probably leaning out as the fuel moves away from the primary main.

 

+1, had the same problem in my hardtops when always leaning left, either sideways or up against trees.

[clean55]

fix GJM? and going to check all the wiring friday.

[GJM85]

Unfortunately there is no fixing the laws of physics. The easiest possible solution is changing your driving line and maybe the gear your using. You can check your float level is right and make sure you've got no vacuum leaks.

 

The other concern could be fuel pressure. If your fuel pressure is too low the centrifugal force can stop fuel flowing the the lines. When turning left, the fuel in the tank moves toward the pick up and fuel lines and doesn't stop fuel supply like it does when turning right.

Edited March 7, 2013 by GJM85

[altezzaclub]

Can you raise the float level without losing performance?

 

This is a Weber DCOE problem, but I haven't heard of it on a stock carb, and the fact it has just started suggests the carb fuel level is not the problem..

[GJM85]

The standard float level of any carb is set just below the holes in the emulsion tubes. If the level goes above these holes emulsion doesn't occur and it runs rich. Too low and the bowl runs dry.

 

 

Here's my uber fast paint diagram.

Edited March 7, 2013 by GJM85

[GJM85]

:oops:

Edited March 7, 2013 by GJM85