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1994 Bonneville SE: Return fuel-line diameter question http://www.pontiacbonnevilleclub.com/forum/1992/topic43685.html |
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Author: | MikeESoc94 [ Mon Jul 07, 2014 10:04 pm ] |
Post subject: | 1994 Bonneville SE: Return fuel-line diameter question |
For my 1994 Bonneville SE: 2 years ago I used Dorman #800-153 (3/8" diameter steel tube with compression fitting) and a tube-bender to near-exact replace the rusted-thru high-pressure fuel-line coming out of the filter ... this worked well. Now, the parallel Return fuel-line (same location, under the P.S. rear door) is rusted-thru (sometimes I can smell fumes), and, it looks like this Return-line steel tube diameter is a bit smaller than the 3/8" high-pressure line. Can anyone confirm that the steel Return-line is 5/16" (under the P.S. rear door) ? If the steel Return-line is 5/16" then I am thinking about using Dorman #800-154 (intending to cut-off 1 end of the beaded ends) to fit into the O.E. nylon quick-disconnect towards the rear (into the sender unit), along with Dorman #800-142 compression fittings for 5/16" tube diameter to splice into the OE steel Return-line that runs from the front. Thanks for any info. |
Author: | 95naSTA [ Mon Jul 07, 2014 10:40 pm ] |
Post subject: | Re: 1994 Bonneville SE: Return fuel-line diameter question |
My Series 1 L67 equipped 95 had a 5/16" return. I would have to assume they wouldn't use any other size on your 94. |
Author: | MattStrike [ Mon Jul 07, 2014 10:50 pm ] |
Post subject: | Re: 1994 Bonneville SE: Return fuel-line diameter question |
5/16 return line was used on all of the '85-'99 C/H-body cars I've seen. |
Author: | MikeESoc94 [ Tue Jul 08, 2014 9:17 am ] |
Post subject: | Re: 1994 Bonneville SE: Return fuel-line diameter question |
Thanks for the quick accurate info ... I am now going to order the Dorman parts #800-154 and #800-142. |
Author: | MikeESoc94 [ Sat Jul 19, 2014 5:16 pm ] |
Post subject: | Re: 1994 Bonneville SE: Return fuel-line diameter question |
OK, before confirming the source of the gasoline odor I ordered the Dorman parts ... yes, as described the fuel return-line parallel to the fuel filter is severely rusted. Today I get the P.S. rear up in the air and crawl under to confirm the fuel odor location. Turns out I find an ~ 3/8" length-wise split in the the rubber-connector for the other not-rusted line (the smallest-diameter vapor line) between the metal vapor line (from the front) into the nylon tube (going to the rear) next to the fuel filter. With the engine running, when I put my finger over the split in the rubber connector, then no fuel odor. This vapor line rubber-connector looks to be 2-diameter molded ... a bit wider on the nylon tube end than on the metal line end. I have some sizes of typical vacuum hose, but instead of trying to use a single diameter vacuum hose as a replacement I am thinking of wiping some Permatex Form-A-Gasket#1 into that OE rubber-connector split. Anyone have a better idea, or a part# for the 2-diameter molded rubber connector ? |
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