Does it exist?

[dail_h]

   Somewhere I saw ,heard ,or read about an auxilary oil pump for gas and deisel engines. My old truck thumps a bit when I first start it up. Don't have time or money right now for new engine ,If anyones knowes about this I would appreciate info
   drh

[rebocardo]

Summit Racing and JEGS have external oil pumps. There are a whole bunch of different systems. Sounds like what you really need is an oil accumulator that can be pressurized and dump oil into the engine while cranking. Either that or clean the oil pump screen and install a newer high pressure oil pump in the pan. Which would be much cheaper than most systems.

[Corley5]

A buddy of mine put a new oil pump in an old Ford 300 six that rattled a bit when it was first started after it hadn't been ran in a few days.  It started to really rattle after the new pump was put in and didn't last at all. I had a 300 six in an old Ford 3/4 ton that did the same thing for years and thousands of miles.  It ran when I sold it and the new owner drove it a couple years before pulling the engine and transplanting it in another truck and ran it while longer.  That's my experience with new oil pumps in high mileage engines.  

[Duane_Moore]

 ;) Just a word of caution, do not suggest a hi pressure pump. this will starve the bottom end for oil, try an overhead oiled instead, something like the old Mistry oil luber. or leave it alone. the rattle will not hurt an engine. the med. to high speed knocks worry about. the big bang knock. now thats serious.. rods knock at study speed, mains knock under pull, little rattle could mean not to much,  JMO>  Duane

[J_T]

Is this a Ford say 351 or 400 ?

[ADfields]

dail_h, thats not the oil pump it's your cheep oil filter!!! :P   What is going on is the pump loses it's prime due to a bad one way flapper in the filter.   You need to run a top of the line Fram filter not the cheep ones.   Fram PH8A is the worst one for doing this, is that what you have?   Go with the Fram Tough Guard filter as it has a very good Silicone anti-drainback valve in it that will fix that dry start up you have. ;)   All the filters out do a great job of filtering oil but that is not all a spin on filter is for.   Get it fixed soonest as that dry starting is flat killing your rod and main bearings!
Andy

[9shooter]

Airplane engines have these oil pumps on them sometimes. Also heavy equipment and deisel engines that are run in cold climates. The idea is to pressurize the lube system in the engine before actually starting up the engine to provide lubrication to those surfaces that the oil may have drained away from. I think I've heard that 90% of engine wear happens in the first few seconds of engine start up. A typical auxiliary pump might run for 30 seconds before you crank the engine over. Dependant on the milage of this engine, it may be due for a pump rebuild/replacement. You might also check out putting in a higher pressure pump. Another alternative is to put some of those oil additives such as, motorcoat, in your engine. I've had good luck with that one. Here is a good overview of some of your question; www.babcox.com/editorial/ar/eb 10445.htm

[rebocardo]

If you have a I-6 300 and it "ticks" I would not do a thing to it. Not only have I owned vehicles with that "problem", when I worked at the Ford dealer when those engines were new, they sometimes ticked from the factory. All this with no ill effects. The engines seem to last forever.

[ADfields]

Bet y'all a hundred bucks it's just the filter! ;) And I don't do much betting, cant afford to lose.   Had this on my 76 Ford 460, my 69 Ford 390, 79 ford 400, 89 Ford 460 and tons of friends with this trouble in the last ten years or so.   They thump for a bit till the pump fills the filter back up and gets oil to the rear main bearing.   Always been on Ford V-8's for me but I have herd tell of the same thing killing the #1 rod bearings in small block Chevy's. The Chevy's don't do the thumping thing they exit the #1 rod out the side of the block in time with no warning unless you watch the gage on start up. :-/
Andy

[etat]

AD, I bet ya I ain't a gonna bet you!   About every old ford I ever had them lifters would do that off and on til they got primed up.  I didn't know about the oil filter thing.  One thing about an old ford, it'll talk to you.  Yer also right about them chevy's, they don't care enough about ya to talk to you.  They'll just get and sling something out the side, just like you said!!!!!!!

[ADfields]

 :D :D :D :D
DanG it!   Maybe I can make some money some other place. :

I have often wondered why some of the older Ford lifters tick like that. ???   Had the 69 390 and it ticked when Dad got it new in 70.   I also had a 300-6 in a 82 one ton tow truck that ticked all it's long hard life. ???   Them 70's Ford power steering pumps growling after they had been ran low once used to drive me nuts also. :   But I still love them ole Ford's. 8)
Andy

[Corley5]

Old Ford's never die they just get sick.  Chevy's blow up ;D ;D ;D  That's my experience ;)   Ford= Fix or repair daily, For old retired Democrats, or spelled backwards= Driver returns on foot ;) :D :D ;D of course if you really like Fords there's also first on race day :

[oldsaw-addict]

For the record, chevy bad, ford good. Thats the redneck view on the matter, and I'm a redneck. I have a 1940 half ton FORD in my driveway that I've been meaning to restore, I just havent found the time yet, the point is that its 60 years old and can still run and drive, when I decide to drive it. :D

[woodrat]

All right, a good old-fashioned Ford vs Chevy debate!   8)  Myself, I'm not inclined towards Fords though I've had a couple of good ones. My experience with Fords that go tap tap tap is that it has been wristpin/piston slap noise on a hi mileage engine, and that in my case anyway, it was nothing to worry about, just a little annoying. That one tapped like that for a long time with me, and I saw the truck in town once two years after i sold it, and it was still making the same noise.  :D  The oil filter thing sounds like a likely suspect in  your case though as it is just a startup problem.

[Frickman]

Just some thoughts:

Ford vs. Chevy - Anything that starts up first thing in the morning is fine with me.

Engines with tapping noises - I've got a 94 Ranger with a 4.0 that's made occasional lifter noise since it was new, and it's still going strong at 165,000 miles. I've had Chevy's that blew up with no warning at all, so maybe the Ford's do talk more to you than the GM.

Oil pressure at startup - I'm casually involved with several local race teams, and we have separate ignition and starter switches on the cars. They allow us to crank the engine for 30 seconds or so to build up oil pressure before firing the engine. If you are concerned about oil pressure at startup it shouldn't be hard to install a separate starter switch to allow you to do this.

[ADfields]

I got nothing agents GM.   I was a Chevy man till the mid 70's and found I always had them apart working on them, they are cheep and easy to fix! ;)   Ford's are not so easy to work on but once you fix it it stays that way for a long time.   I think Dodge makes the best gas motors but the rest of the stuff around it sucks, them fenders are so thin a guy can see daylight on the tires in Arizona's sun!! :D :D :D
Andy

[Lenny_M]

 I had a 300-6 that always had the start up noise fot a few seconds.Tryed diffrent filters,oil, new oil pump ect.
 Then I tryed Slick 50 at about 200000 miles and I never heard the noise again, The engine had about 400000 in it when it was parked.Still running strong.Everythang around the motor was going away from rust.

[dail_h]

   I'm going to try a NAPA filter and slick 59 in the morning. Sure hope it works

[Corley5]

NAPA and Carquest filters are made by Wix.  I like 'em 8)

[dail_h]

   Aw shoot Corley, I been useing Carquest filters,their red line I think. Anyway wound up with a Motorcraft filter ,and Slic; 50 no change.
   Oh shoot,do I gotta install them?

[ADfields]

I was thinking Carquest was a mix of brands. ???
Andy

[Corley5]

Any of the CQ filters I've bought here says made by Wix in small print on a bottom corner of the box.  The same with Napa filters