I have NAPA P/N 7301347, which is a universal check valve.

The guy I spoke to say it looked to be about 1/8" on one side, and about 1/4" on the other. Problem is.. I need about 3/8" and 1/4" to fix 4mm and 6mm, 1/8" is going to be entirely too small.

I want to know if anyone has used these $4.69 check valves, and if so... I will pick some up.

I need to get them today or tomorrow cause I am doing the vac job Saturday and Sunday, and I'd like to replace the pills.

Now since these are 'Universal' if I replace all 5 or so, is that going to **** up my engine operation at all?

Let me know....
Thanks a lot,
-Darren-

 

I used one on my last FD....it worked fine. Just a one way check valve....just make sure you have the open end going where the open end is supposed to go. I just used one of those cheap HELP! valves from the auto parts store.

 

I have a cheap universal check valve on one of my lines. I havent had any problems with it.

 

Didn't I already respond to this...yes, they will

Almost 2 years and counting and still boosting perfect.

 

ive had mine in for almost 3 years and no problems.

 

no problems here either, can't beat it for less than $5

 

I've had no problems with mine. I got them from O'reily Auto Parts for like 3 bucks

 

just for kicks, whats the list on the stock vavle?

 

I would just like to add that I in fact did have problems with these. After about 5000 miles, I destroyed two of them (broke in half). Take that with a grain of salt though, cause it appears that most everyone else has had good experiences, so maybe mine was just a fluke. Regardless, I've upgraded to McMaster-Carr valves instead.

Rob

 

I have had one fail, but two others seem to be fine. I bought some OEM Mazda ones from Pettit recently and plan to install them the next time I change the oil.

 

Which one from McMaster did you buy? Perhaps and part number or link would help.

 

As outlined in Damian's thread :

Check valves, part# 7775K61, $8.86ea
Brass nipples, part# 5346K81, $5.90 pack of 10

It may be overkill, but they work. I no longer have to worry about breaking another check valve. Besides, they're still cheaper than the OEM ones

Rob

 

I replaced some of mine with some from my Honda parts bin. Most hondas have every size you need and you can go to the junkyard and get buckets of them for pennies. The Honda brake booster one can be used on the purge control solenoid and for the brake booster line (if you replace the ratty/fried stock one). The Honda ones for the cruise control can be used anywhere else. If you're willing to put a non-Mazda part on your car, the Honda ones can definitely withstand the abuse. I have been around many boosted Hondas (as high as 18 psi) and have never once seen one fail.

Sonny