| Author |
Message |
    
E Snyder
| | Posted on Sunday, January 05, 2003 - 11:06 pm: | 
|
New phenomena today.
Driving off-road, SIIA doing fine, occasionally would stall when idling for no apparent reason.
25-30 degrees, wet snow.
My mechanic (who happened to be riding with me at the time  ) diagnosed it as carburetor icing up, due to high levels of cold moisture in air.
Stop car, turn off for 30 seconds, and ice melts, then car runs fine! Repeat as needed.
May not be news to anyone, but I hadn't encountered it before. Good to know.
Enoch |
Paul Grant (Paulgrant)
| | Posted on Monday, January 06, 2003 - 09:26 am: |
|
Is it safe to assume that you are using a Weber? If so, is it a 2bbl 32/36DGV? Pierce manifold? Without any further info its hard to give specific advice but I'll relate my experience with the aforementioned carburetor. I regularly suffered from an icing of the intake manifold and lower carburetor body on my SIII. Webers (even the single barrel model) are nortorious for running cold especially with K&N air filters attached. You don't have headers on your IIa do you? The best solution I found was to buy the Pierce intake with a water jacket on the bottom. Pierce is aware of the problem of carb icing and this intake will solve the problem. Alternatively, weld your own sleeve on to the bottom of the intake and plumb a line from the coolant system to deliver warmth to the manifold and lower carb body thus preventing the icing problem. I was never able to get my Weber running well (lean) enough and finally went back to a brand new Zenith and my troubles disappeared. And yes, I know about Zenith "warping" but have never experienced it or seen anyone else suffer the anomaly. |
Paul Grant (Paulgrant)
| | Posted on Monday, January 06, 2003 - 09:42 am: |
|
Well I was just reading the other thread about adjusting the idle on a 2bbl Weber and saw your post so I guess you are running one as well. What other things have you done to your engine? Have you been able to get a satisfactory mix? Mine was always too rich and I had replaced every jet with the smallest Weber offered. I never saw better that 13 mpg and any performance gain was negligible. I know that when I was making these changes to my truck a few years ago I probably should have upgraded to the 2.5 cam but no one was even talking about that option then. I've also wondered about the Weber that was stock on early 110s that had the 2.5L (32/34DTM I think).
Overall, I'm happy with the Zenith (I originally had the single barrel Weber on the truck). It has been very reliable, returns 17mpg regardless of how I drive and doesn't have the icing problems. These trucks are glorified tractors and I am a strong believer in the K.I.S.S. principle. |
E Snyder
| | Posted on Tuesday, January 07, 2003 - 11:06 am: |
|
I take the KISS rule to the extreme. Fix only if broken! The truck was pretty well tuned when I got it, so who knows exactly what I've got. The truck is a 66, and it was changed over to negative earth and an alternator, Webber carb, but looks to be fairly original (engine-wise) other than that. Runs quite well, brought over from England 2 years ago. I was only messing with the idle screw to try and compensate for what turned out to be the icing.
Enoch |
|
Closed: New threads not accepted on this page