<VV> Fuel pump eccentric

[Bob Gilbert]

The stock fuel pump is bolted to the housing the oil filter is mounted to. The 
oil filter lines in the housing are right next to the fuel pump mounting boss. 
A lot of heat is transfered to the fuel pump. Carefully touch the underside of 
the fuel pump that is away from the oil filter lines just after the engine is 
shut off. It will be hot. Real fast touch the underside closer to the oil 
filter lines, will burn you if you are not "REAL" fast. Mine did not cause a 
problem except for extended idleing or 5 minute hot soak after engine shutoff.
Electric pump solved the problem. Follow all saftey instructions when adding 
an pump.

Bob



On Sat, 28 May 2011 08:59:11 -0400
  Charles McKinley <cmckinley313 at verizon.net> wrote:
> All,
> 	Here's a little post-mortem on the wild goose chase of the last few  
> days, related to my erroneous suspicion that the fuel pump eccentric  
> was worn out. I think Bill had the cause (vapor lock) nailed in his  
> note, included below. The happy ending is that the Vair fired up  
> instantly this morning (temp 75 F) and is running like a watch. I'm  
> scratching my head now about pursuing the electric pump issue. If  
> there's general agreement that it can (will?) eliminate vapor lock  
> problems, I'll definitely go for it.
> 
> Thanks again to many of you for all the helpful comments and  
> suggestions!
> 
> Cheers,
> Chuck McKinley
> '63 Monza 900 80 hp 3-speed
> 
>>
>> From: chuck mckinley <cmckinley313 at verizon.net>
>> Date: May 27, 2011 3:34:10 PM EDT
>> To: CORSABILL at aol.com
>> Cc: cmckinley313 at verizon.net
>> Subject: Re: <VV> Fuel pump eccentric
>>
>>
>> Bill,
>> 	Thanks much for that very perceptive observation. In fact, the engine
>> just sort of petered out on the highway on an extremely hot day
>> (mid-90s) and slowly came to a halt. It had been parked in a college
>> parking lot through the heat of the day, so doubtless the fuel tank  
>> and
>> everything else was heat-soaked. That could well have been a vapor  
>> lock.
>> This is second hand info, as my daughter was driving it at the time.  
>> We
>> had it towed home. I did notice that the fuel filter (just a couple
>> inches upstream from the pump) was empty, and when I activated the
>> throttle lever manually while looking into the left carb throat, there
>> wasn't any jet of fuel, suggesting that the carb reservoir was empty.
>> That's what made me suspect the fuel pump. The tank was still about  
>> half
>> full. I haven't been able to troubleshoot it any farther, as the  
>> starter
>> solenoid picked the same day to fry itself. I've just replaced it and
>> reinstalled the starter in the car, but I need a shower before I go  
>> any
>> farther into it!
>>
>> Thanks again,
>> Chuck
>>
>> On Fri, 2011-05-27 at 14:03 -0400, CORSABILL at aol.com wrote:
>>>
>>> Chuck:
>>> The lift looks adequate, but the fuels we have to use these
>>> days is very different from early days of the 'Vair.  The
>>> current fuels boil at lower temps and cause a vapor
>>> lock, i.e., little fuel to the carbs.
>>> So this is another reason to go with the electric pump.
>>> I understand lclc will not bother with a fuel problem car
>>> unless it has an electric installed.
>>>
>>> HTH, Bill Loftin
>>
>>
>>
>>
> 
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