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Home » Public Forums » GMCnet » Airtex will help, Rockauto, not so much.....
Airtex will help, Rockauto, not so much..... [message #337932] Tue, 16 October 2018 17:50 Go to previous message
Matt Colie is currently offline  Matt Colie   United States
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma:
Senior Member
For the recent overhaul, I purchased an Airtex 41566 pump (that is the one without a vapor bleed). Even though I did a 30 minute test run before we pulled the front subframe back in, I did not notice anything out of place.

When the coach was back on the road, we would often get a blast of gasoline fumes into the cab. At three different times, I fixed the three things that I was sure were the cause. Nope.....
We also developed an oil leak down by the filter. In an effort to identify that, I had my head in the right wheel well with the liner out after we returned from Amana. There seemed to be no reason for the oil leak, but that took an immediate second place to the fuel that was running down the side of the fuel pump. I replaced the pump. More about that later.

When we returned from the next excursion that was just as far east as Amana is west for us, I got out the sheaf of papers about the overhaul and contacted RockAuto about a warranty. The corespondent asked what vehicle it was installed in and like an honest fool, I wrote a 1973 GMC Transmode (from their listing, but maybe not how I ordered it). With that, he said that as that was not the application that Airtex lists for that number, he could not warranty it. (I was angry and annoyed.) The pump had been used for less than 1500 miles and that was maybe 25 hours total.

At that point, I contacted Airtex. My real intent was to get the Transmode listing into their catalog. It was here that I came on a very friendly shore. I explained to the contact there that the 41566 pump was THE Number for an engine driven pump for this family with 455 from '73 to some of '77. He also filled in that RockAuto is not a distributor and he didn't actually know where they got the Airtex pumps that they sold. The he volunteered to ship me a replacement 41566. I accepted and it arrived today. The defective pump is boxed up to go back as soon as I clear up some other shipping issues.

About the replacement. I live in striking range of NAPA's Tri-State warehouse, O'Reilly's Michigan and northern Ohio warehouse and Auto Value's local warehouse. Nobody had a 41566 version pump by any supplier. So, I got a 41567 (the one with the vent fitting) put a short hose and plug on it and screwed it in. Off we went for Albany (NY) with out fuel vapor, finally.

I now have the right 41566 pump next to the coach in the barn, and it will get installed, but I am going to cure the lube oil leak that is at the cooler adapter before anything else.

For those that might care, we are a little short of 3K on the engine and it is running better than it did and that is something to say. It pulls so much better with the cam Dick P recommended that I am now wondering if a 3.55 would be an improvement. Remember, this is a very light coach. I do not have a good read on fuel rate yet, but it seems to back in the low 9's where it was before #7 shed its rings.

Matt

Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

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