[AT] Need help troubleshooting engine/compressor

[charlie hill]

I've been around a lot of compressors after working 25+ years 
in industrial maintenance with a lot of sandblasting.  I've never 
seen a compressor that didn't have some sort of by-pass button or
valve that you manually hold in to let the engine start and get 
up to speed.  Cecil, maybe yours is automatic and you don't have
to manually hold it but it should be there.  Most of the time there
is a button or a switch right beside the ignition key for that purpose.
I have seen those by-pass valves fail and cause the problem you 
are describing.   I've seen my guys wire the linkage open to get them
going.  Without seeing your compressor I wouldn't know where to tell
you to begin.  We used to run gasoline powered compressors but I
haven't been around anything but diesel for over 20 years.

Charlie

-----Original Message----- 
From: Doug Tallman 
Sent: Tuesday, August 11, 2015 8:18 AM 
To: Antique tractor email discussion group 
Subject: Re: [AT] Need help troubleshooting engine/compressor 

Cecil, It sounds like carburetion issues or a big vacuum leak. I'd think 
you would hear the hiss of a leak that big. Maybe try spraying a little 
carb cleaner around the manifold and see if it picks up. Doug T





On 8/11/2015 7:09 AM, Cecil R Bearden wrote:
> Sullair 185 w/ ford/Mazda 4cyl gas engine.  Compressor always has been
> cold natured.  Had to be completely warmed up before choke could be shut
> off.  Open air line valve and engine would die without choke on at least
> half way.  Working fine a month ago.   Now, Engine tries to start and
> gets up to idle speed but compressor is loading engine and it cannot get
> up to operating speed.  If compressor could be disconnected from engine,
> it would get up to operating speed. Have replaced fuel pump, and plug
> wires.  Spark plug had some surface carbon but not really gunked up.
> took air intake elbow off of compressor and tried to cut off air intake
> to allow engine to start, but it nearly sucked my hand into the pipe.
> In the past distributor,ignition control box, and coil have been
> replaced.  Have worked on engines gas, propane and diesel for 50 years
> and this one has me beat......  This is the reason I like Diesel!!!
>
> I use this for sandblasting and blowing off the round baler.  Right now,
> the baler has some hay lodged between the belts and the rollers on the
> back side and it has the baler bound up.  The only way to get this out
> is to use a lot of high pressure air and cut the hay out with the air.
> Or, cut the belts pull them out with the loader and re-splice.  I did
> not blow off the baler last time i used it, it was trying to rain after
> I put the new bearing in that was causing the fires.  The hay builds up
> in the back above the top of the bale chamber, and causes the belts to
> stick.  Really dry hay is the worst problem...
>
>
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