| Re: [GMCnet] Don't assume that the carb filter is clean because you have a filter at the rear [message #322552 is a reply to message #322550] |
Wed, 23 August 2017 13:10   |
James Hupy
Messages: 6806
Registered: May 2010
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Senior Member |
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Just a small matter of microns. The carb inlet filter will stop particles
as small as 5 microns. That pretty much includes everything including muddy
water. The upstream in-line filters for the most part are 20 micron. So
some of the really small stuff will pass through them. If you remove the
inlet filter, those small particles will eventually will coat stuff like
floats and inlet needles, and metering rods, and that piston that works in
conjunction with the secondary flap, delaying it from opening. GM would not
have put a filter there if it was not needed.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Aug 23, 2017 10:58 AM, "Bob Dunahugh" wrote:
> I took the tanks, rear filter/electric pump, and carb with existing filter
> off the burned GMC. Didn't check the carb filter. As the rear clear filter
> was clean inside. Then installer all these items on this next 78 Royale. I
> pulled the carb filter out. And I could hardly blow threw it. Then cut it
> open. The filter just had a dark tint on it. Bob Dunahugh
>
>
> ________________________________
> From: Bob Dunahugh
> Sent: Tuesday, August 22, 2017 11:35 PM
> To: gmclist@list.gmcnet.org
> Subject: Don't assume that the carb filter is clean because you have a
> filter at the rear
>
>
> I did. WRONG. Every now, and then I'd look at my clear gas filter that is
> between the tank, and my rear electric pump. It's always been clean. Two
> weeks ago I had a terrible time getting home. Pulled the carb filter
> tonight. That filter was almost clogged. Bob Dunahugh 78 Royale
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