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#1 |
When in doubt throttle out!!!
![]() Join Date: Feb 2009
Location: Chico, CA
Posts: 22
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3 water pumps later still wobbles??
I have been through two Kragen (Master Pro) pump and now a Bosch and still have the same problems. Pumps shaft wobbles just enough to have the fan "tink" around on something at idle. Can a pulley get spunked and cause this? I've used the same pulley and fan throughout. Oh yeah new Fan Clutch.
Any other ideas. I've thought about going to an electric fan set up but trying to stay on a tight budget. |
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#2 |
Registered User
Join Date: Apr 2007
Location: Westminster, Maryland
Posts: 411
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Re: 3 water pumps later still wobbles??
is it the pump shaft wobbling or the pulley not being straight, or something on the mounting surface keeping it cocked? i have my doubts about it being the pump shaft wobbling.... just my thoughtssss
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#3 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,647
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Re: 3 water pumps later still wobbles??
x2. If you have the same wobble with three different pumps, it's not the water pump shaft. If the pulley is good and there's nothing under it to cock it sideways, there must be something wrong with the fan.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay Last edited by Stocker; 06-05-2009 at 07:29 PM. |
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#4 |
Registered User
Join Date: Jun 2008
Location: Moss Point,Ms.
Posts: 1,439
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Re: 3 water pumps later still wobbles??
Are you over-tightening the belts?
Mike. ![]() |
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#5 |
Registered User
Join Date: Jan 2009
Location: belmont, ca
Posts: 76
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Re: 3 water pumps later still wobbles??
The other people gave great advice, but as a shop owner I would never buy stuff from pep boys / autozone / kragen / napa, etc... YMMV.
I work with a lot of others shops that continue to buy from them, they seem to always have to return something like at least 10% of time. I guess for them in their eyes the profit is worth the hassle. Too me I do not want to put junk on my customers cars. You might have just been given a bad water pump several times in a row. I have seen this with the stores above for fuel pump/timing belts/t-stats/radiator caps. I am talking about in a row. Even a good store or OEM will sometimes give you the wrong or bad part. The only time I have seen several in a row is with the above stores. |
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#6 |
I'm a poor spectator
Join Date: Aug 2006
Location: San Antonio, Tx
Posts: 2,287
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Re: 3 water pumps later still wobbles??
I bought 3 fuel pumps from advance auto and all 3 of them put out too much pressure, flooding the carb. I ordered a Carter from Summit and violoa!! Problem solved. YOU CAN buy 3 defective parts in a row, I did.
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2006 Jeep Unlimited IMPACT ORANGE 1993 Chevy 2500 4x4 ExCab LWB 454/NV4500 Tow rig ![]() 1977 Ford F100 2x4 LWB 1st truck I owned, still have it!!! ![]() 1979 Ford F150 4x4 SWB Built Ford Tough!!! ![]() 1971 Chevy Blazer 350 / SM465 / NP205 UNDER CONSTRUCTION Soon to have a LQ4 6.0!!! |
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#7 | |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,647
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Re: 3 water pumps later still wobbles??
Quote:
![]() I suppose the OP could have gotten three pumps, each with a bent shaft. It seemed unlikely to me, but anything is possible.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#8 |
'69 Chevy SWB
![]() Join Date: Feb 2009
Location: Surprise, Az
Posts: 1,065
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Re: 3 water pumps later still wobbles??
wouldn't a fuel pressure regulator solve this? that's what i did. put a psi gauge in the stock one and 0psi at idle. new pump 10psi at idle, +regulator, now 6 psi at idle with reg.
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#9 |
Junior Member
Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
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Re: 3 water pumps later still wobbles??
This a true story even though it happened a very long time ago, late 1970's.
I had a Dodge chassis motorhome and the the alternator went bad. I got 3 bad ones in a row from Kragens before I finally decided to spend more money and went to Napa Auto Parts store. I never had problems with the one I got from them. I work at chain auto parts store, not one that is mentioned, and have seen problems with the cheaper stuff, but the "Life Time" parts are usually pretty reliable. The majority of the parts sold now days are not made in the USA, so quality control seems to be not as good on the cheaper parts. Danny
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'67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E. |
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#10 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: 3 water pumps later still wobbles??
Are you buying the correct water pump? Is your pulley system set up for a short water pump or a long water pump? If it's set up for a short, and you buy a long and tighten the belts, the angled tension on the pulley would probably be enough to destroy the water pump.
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! |
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#11 |
Next project: 1970 K10
Join Date: Feb 2004
Location: Fort Collins, Colo 80524
Posts: 6,685
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Re: 3 water pumps later still wobbles??
But the best solution is the correct pump pushing the correct pressure.
![]() ![]() Autozone is good for specials on oil, wipers, spark plugs, and chrome valve stem caps. But anything like pumps, electrical items, and any other hard parts I'll only buy from Carquest or NAPA. I really miss Big A! Haven't had one of those here in years.
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Bob 1970 Chevy K10 LWB "Goldie" 350/TH350 next project!! 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE |
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#12 |
The Older Generation
![]() ![]() ![]() Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,515
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Re: 3 water pumps later still wobbles??
-
I was having the same type of problem with the '71 4x4. I kept getting that "tink" sound off and on and I couldn't figure out what the fan was hitting. There wasn't anything even close to the fan. It was a flex fan and I found a couple of small cracks in two of the blades so I swapped it out for a stock type clutch fan. Rats, it still did the same thing. I finally figured out that it was the flywheel hitting on the metal flywheel cover. LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#13 |
Registered User
Join Date: Feb 2006
Location: Smyrna, Ga
Posts: 1,647
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Re: 3 water pumps later still wobbles??
i just installed a water pump on my truck from a little mom and pop store. the new pump flange is out of round by .030". i put a dial indicator on it and spun the flange. its creating a very noticable shake in the engine. you can feel and see the pully wobble. i switched to a billet pulley and still have the problem. i am going to have to replace it to get rid of the vibration.
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#14 |
When in doubt throttle out!!!
![]() Join Date: Feb 2009
Location: Chico, CA
Posts: 22
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Re: 3 water pumps later still wobbles??
Thanks guys for all the input.
= Belts seems to be the right tightness I can feel a tiny bit of play in the shaft and can hear some humming in the pump bearings. All the pulleys are lined up right and yes it is the right part (as far as I know). Really considering a Elec Fan swap. |
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