Qjet Accel Pump stuck.

[A 68 Wreck]

Well, all else on this 4MV is working great on the test runs, but, the replacement accel pump I put in is now not returning the entire way up. 3/8 - 1/2" low. I can pull up the rod as it is "free", but is simply drops back down the 3/8 - 1/2". I used a "stock" replacement rod and plunger, and used the old springs. the stock did NOT have the retaining spring under the plunger, which I have seen on line.
maybe a stronger return spring? I did stretch it a bit prior to re-install.
any help would be appreciated! this is the second time it has happened...

thanks.

[Wrenchbender Ret]

Some of the new pumps that come with the kit swell up from the ethenol in the gas. The cup comes off the plunger & hangs up. You will probably need a new pump or cup.

[geezer#99]

You did put the plunger assembly back together like in the link pic. With the spring in it.
http://www.vetteprojects.com/kstyer/quadrajet_4.htm

[A 68 Wreck]

Thanks Wrench.

Indeed, the plunger and return spring were stuck down at the bottom of the well! Even Lassie would have had some time getting them out.

So, i just installed a NEW "accel pump kit", which only consisted of a new plunger and rod. I used the old top spring and clip, and the old return spring.

My simple feeling is a stiffer return spring about the some length. As I understand, this will obviously force the rod back up and help keep the plunger on, and as I also understand it, the rod will not pop out anymore on account of the top clip stopping at the underside of the top carb plate (air horn?)


Is this fallacy? Or do I need the "super" accel pump kit I saw on line, with the round retaining spring under the plunger?

thanks!

[Lee H]

In the picture below, the lighter spring belongs under the pump to return the pump to the top of the bore and the heavier one on top held in place by the clip. This is how they left the factory and how they should be rebuilt. Should not reuse the old ones, not much spring left in them after a bunch of miles. Order the kit from Cliff Ruggles, they are chemical (ethanol, etal) resistant and will hold up for a long time.

[A 68 Wreck]

Yup. The only thing I do not have is that round retainer spring. Hmmm? Makes me wonder?

The old one didnt have it and I had this problem, and the new one does not have it and I have this problem? Hmm...maybe a purchase is necessary.

[A 68 Wreck]

Well poop. Cliff Ruggles it is. That appears to be a much sturdier way of holding the plunger on.

Well, now I guess ill do the dishes for the Mrs., and kick around the dog! ;~)

Thanks again.