Fuel Injector Seals

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Feb 19, 2004 | 01:45 AM

GRX

Thread Starter

Le Mans Master

Joined: Jul 2001

Posts: 6,252

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From: Silicon Valley Kalifornia

Fuel Injector Seals

I read that only gasoline, not oil, should be used to lube injector seals when installing (also never use silicone lube) on the rail. Can anyone chime in to confirm/deny this claim? Oil would be easier...but I always use gasoline.

Feb 19, 2004 | 05:16 AM

AGENT 86

Team Owner

Joined: Jan 2003

Posts: 20,335

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From: Summerland B.C. Canada

Re: Fuel Injector Seals (GRX)

Oil and gas are both petroleum based :confused:
Silicon doesn't attack rubber :confused:
:lurk:

[Modified by AGENT 86, 5:08 AM 2/19/2004]

Feb 19, 2004 | 11:31 AM

GRX

Thread Starter

Le Mans Master

Joined: Jul 2001

Posts: 6,252

Likes: 2

From: Silicon Valley Kalifornia

Re: Fuel Injector Seals (AGENT 86)

Silicon + O2 sensor = BAD

Feb 19, 2004 | 11:53 AM

1MoorTym

Drifting

Joined: Aug 2000

Posts: 1,521

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From: West Islip New York

Re: Fuel Injector Seals (GRX)

I was told to use oil and have without any problems.

Oil is certainly a better lubricant than gas.

Feb 19, 2004 | 11:56 AM

GRX

Thread Starter

Le Mans Master

Joined: Jul 2001

Posts: 6,252

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From: Silicon Valley Kalifornia

Re: Fuel Injector Seals (1MoorTym)

I have read in some shop manuals (not GM) to use gasoline...I'd rather use oil.

Feb 19, 2004 | 07:17 PM

brock71

Advanced

Joined: Aug 2003

Posts: 98

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From: Hudson OH

Re: Fuel Injector Seals (GRX)

Yup, both manuals I have say to use a little oil.

Feb 19, 2004 | 07:37 PM

Pete K

Race Director

Joined: Feb 2004

Posts: 12,518

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Re: Fuel Injector Seals (brock71)

I just use spit! Works every time. :thumbs:

Feb 19, 2004 | 08:14 PM

SunCr

Le Mans Master

Joined: Dec 2000

Posts: 7,839

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From: San Diego, Ca

Re: Fuel Injector Seals (GRX)

Gasoline - Yikes! - Can't say I've ever seen that recommended in any service manual, though GM recommends transmission fluid to lube TBI injector seals. I also suppose a drop or two of gasoline that might drip onto the manifold would evaporate long before it caused a problem, but the idea is to lubricate the O-ring so it isn't damaged during installation and use. So if gasoline does the job, so does water or spit (which probably have a slower rate of evaporation). Stick with oil.

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Feb 19, 2004 | 08:20 PM

Pete K

Race Director

Joined: Feb 2004

Posts: 12,518

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Re: Fuel Injector Seals (SunCr)

If I run out of spit I also use dielectric grease. It seems to let the injectors come out easier next time . I got the ok from Gordon Killbrew! :cool: