lost oil presure

dodgedifferent2

dodgedifferent2

hung like a stud field mouse and
ok i have been playing around with the dart alot as of late and today i went for a ride down the road:hmmm:
I had some fun

dumped the clutch a couple of times.

after the last time i noticed the oil pressure started to drop. It was running about half way on the gauge then dropped off to nothing and i shut her down.
I am hoping it is just a bad gauge. The sending unit is new
whats the best way to go? should i get a mechanical gauge and mount it in the hole?
Also i got a stock timing gear, if it was a high volume oil pump would the drive be wrong?

I knew i should have checked the damn oil pump while i was in the oil pan last time :doh:
 
It's not the oil and it's not the timing gears. If you re-used the original oil pump drive with a high-volume pump, it's possible (but not probable) that it broke the shaft. Pull the distributor and driveshaft out and run the pump with a drill and a piece of 3/8" hex stock. No drag? Either the pickup is cracked or the pump failed.
 
personaly when it comes to oil..i dont trust anything that isnt mechanical for readings....truth be told gimmy analog readings on everything i can
 
So you've never flown on an airplane? :D

I find great humor in how guys just cling to mechanical gauges as if there's something wrong with electrical ones (almost all of which are analog, digital display or needle). The only difference is whether the mechanical part is inside a sender adjusting a rheostat, or in the gauge adjusting a needle. Unless you're a big fan of Scotch-Loks and ungrommeted holes through metal, a mechanical gauge is no more accurate or reliable than an electrical one. Stock factory gauges, at least in Mopars, have been deadly accurate for 50 years... the only weak spot was the bimetallic "5V" cluster regulator, and even those have a life span of 10+ years before they become problematic (I've never actually had one fail or stick).
 
with me its more an issue of another part to fail....when was the last time you saw a capilary tube fed oil presure guage drop dead?......i mean hell ive got a factory trans pressure guage in my late 50s loader...you know what..even with the face glass busted in..and the neglect and abuse its seen over the decades of log loading etc..it still works flawlessly....tho i did open it up clean it and put new glass in it...
 
Dr.Jass said:
If you re-used the original oil pump drive with a high-volume pump, it's possible (but not probable) that it broke the shaft.
Click to expand...

been there, done that...lost the oil pressure to prove it. On a winning round too. :(
 
69.5CUDA said:
with me its more an issue of another part to fail....when was the last time you saw a capilary tube fed oil presure guage drop dead?
Click to expand...
I've seen three exploded bourdon tubes (the brass "sock" inside the gauge that expands to move the needle) that made oil-filled gauges out of ones that didn't start that way, and more failed feed tubes--both plastic and copper--than I can count.

I gotta admit, it was pretty damned funny when the bourdon tube exploded in a Pontiac (100PSI) and not only filled the gauge but blew the light-bulb socket out the back of the gauge. :D
 
I've seen probably 3 times as many electrical aftermarket gauges fail as mechanical ones, often failing by simply reading wrong. YMMV.
 
Not likely. In each case, the mechanical gauge agreed with other signs, like the fact that one engine had been running for several thousand miles with an electrically-indicated 0 psi of oil pressure. In another, the electrical gauge indicated a steady 80 psi of pressure while the mains starved for oil. Miraculously, that 80 psi existed even when the engine was not running, a fact that the owner failed to notice. Had he seen this, he might have been prompted to suspect the gauge before the engine was toast.
 
And how long have we all been relying on an electric tachometer, rather than a cable/gear drive system, (that can break a cable or chew up a gear)? :hmmm: ....not to mention the extra strain on your cam drive. :doh:
 
I replace electronic gauge sending units on a daily basis. When in doubt we hook up a mechanical gauge unit.

I would never consider an electronic oil pressure or water temp gauge on something crucial. Like my stock car for example. Those will remain mechanical.

Electronic gauges in my truck and my New Yorker, yes.

There are mechanical gauges in the Geo but that engine was new and the car doesn't have any gauges.
 
Just replaced an AutoMeter 4304 mechanical boost gauge at the shop, under warranty. Same principle and mechanics as an oil pressure gauge. It wouldn't change readings unless it was firmly smacked. :huh:
 
so i have now come to the conclusion that it is the gauges on the dash since the temp gauge does not read anything when the oil pressure gauge says nothing and also the fuel gauge never reads a damn thing:hmmm:

but now i found out that the lil 340 loves to rev to 6 grand very quickly
 
You do have nice, thick ground straps going from the engine to the body, battery to engine, and battery to body... right?
 
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