any1 heard of the oil pressure sender leaking badly? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

knightowl73 · 03-13-2010, 03:16 PM

i have been looking for the oil leak for over a month now, about the same time i put in the original sender trying to make the guage work again, i soon after noticed the leak. i cannot really pinpoint it, but it drips pretty bad. i looked and seems the highest wet point that i can find is the tip of the oil pressure sender, the bg fat one that kinda looks like a all-metal big hat or something. anyone had ths problem or know of them leaking?

71swb4x4 · 03-13-2010, 03:22 PM

Yep, they leak sometimes. Sometimes it's as easy as tightening them up. I have a Ford were the fitting for the sending unit was barely even threaded into the hole. If a little tightening doesn't do add some teflon tape to the fittings. That should take care of it for you.

knightowl73 · 03-13-2010, 03:32 PM

its plenty tght and i did put the teflon tape. i think it may be leaking from the tip where you plug n the connector. my wiring in the back of the engine is coated with oil, and it drips pretty bad when running, but even with a flaslight and mirror i cannot actually see it doing this, but these are the only things up that high with oil on them.

Restrorob · 03-13-2010, 03:38 PM

Quote:

Originally Posted by knightowl73

seems the highest wet point that i can find is the tip of the oil pressure sender

Yep, Seen many leak from around the seal/rivet holding the wire spade connector on. Swap it out with another and you should be good to go, Also be careful using Teflon tape on single wire oil/temp units that require a ground path. I've seen it interrupt grounding making people think they got bad senders.

**nlped** · 03-13-2010, 04:15 PM

Had the exact same thing happen on my '87. When I pulled the old one off to replace, the little "tit" was slightly cracked and a small amount of oil was leaking out of it. New one is in place, and no more oil leak

71swb4x4 · 03-13-2010, 04:22 PM

Check your intake gasket too. That is up high, and can cause a pretty bad oil leak.

PhilaTruck · 03-13-2010, 08:15 PM

Agreeing with 71swb. Same area, prone to leaking, hard to see. Having said that, my leak was the sender.

knightowl73 · 03-13-2010, 08:21 PM

i checked the ntake and even around the distributor, both dry, i will change the sender tommorow when i do the oild change. i got some spray degreaser so imma try and clean it up a bit and get everything dry again after i put on the sender. hopefully mine is the sender too.

Drzronnie · 03-15-2010, 09:59 PM

I had a sending unit go on my Camaro and it was spraying so much oil that I had to power wash the bottom of the car to find out where it was coming from.

po_bird · 03-16-2010, 10:01 PM

Its common for the pressure sending unit to leak when it goes bad

03-13-2010, 03:16 PM	#1
knightowl73 TUKE-NoBullChit Customs owner Join Date: Feb 2010 Location: La Marque, Tx Posts: 640	any1 heard of the oil pressure sender leaking badly? i have been looking for the oil leak for over a month now, about the same time i put in the original sender trying to make the guage work again, i soon after noticed the leak. i cannot really pinpoint it, but it drips pretty bad. i looked and seems the highest wet point that i can find is the tip of the oil pressure sender, the bg fat one that kinda looks like a all-metal big hat or something. anyone had ths problem or know of them leaking?

03-13-2010, 03:22 PM	#2
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: any1 heard of the oil pressure sender leaking badly? Yep, they leak sometimes. Sometimes it's as easy as tightening them up. I have a Ford were the fitting for the sending unit was barely even threaded into the hole. If a little tightening doesn't do add some teflon tape to the fittings. That should take care of it for you. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

03-13-2010, 03:32 PM	#3
knightowl73 TUKE-NoBullChit Customs owner Join Date: Feb 2010 Location: La Marque, Tx Posts: 640	Re: any1 heard of the oil pressure sender leaking badly? its plenty tght and i did put the teflon tape. i think it may be leaking from the tip where you plug n the connector. my wiring in the back of the engine is coated with oil, and it drips pretty bad when running, but even with a flaslight and mirror i cannot actually see it doing this, but these are the only things up that high with oil on them.

03-13-2010, 04:15 PM	#5
nlped Senior Member Join Date: Jul 2009 Location: Hayden, Al. Posts: 4,148	Re: any1 heard of the oil pressure sender leaking badly? Had the exact same thing happen on my '87. When I pulled the old one off to replace, the little "tit" was slightly cracked and a small amount of oil was leaking out of it. New one is in place, and no more oil leak __________________ Carter 1968 Chevy SWB Fleet... Walt 1963-1/2 Ford Falcon Futura...Martha

03-13-2010, 04:22 PM	#6
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: any1 heard of the oil pressure sender leaking badly? Check your intake gasket too. That is up high, and can cause a pretty bad oil leak. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

03-13-2010, 08:15 PM	#7
PhilaTruck Right on the line, baby! Join Date: Oct 2003 Location: Phila, PA 19130 Posts: 1,486	Re: any1 heard of the oil pressure sender leaking badly? Agreeing with 71swb. Same area, prone to leaking, hard to see. Having said that, my leak was the sender. __________________ 83 GMC 406 th400/3.73 Eaton Truetrac posi, headers, x pipe, & racePros. Tubular control arms, lowering rear springs, caltracs. Still ugly, but getting built right, although slowly Click and scroll down for site vendors! Subscribe here!

03-13-2010, 08:21 PM	#8
knightowl73 TUKE-NoBullChit Customs owner Join Date: Feb 2010 Location: La Marque, Tx Posts: 640	Re: any1 heard of the oil pressure sender leaking badly? i checked the ntake and even around the distributor, both dry, i will change the sender tommorow when i do the oild change. i got some spray degreaser so imma try and clean it up a bit and get everything dry again after i put on the sender. hopefully mine is the sender too.

03-15-2010, 09:59 PM	#9
Drzronnie Registered User Join Date: Feb 2010 Location: Lancaster PA Posts: 62	Re: any1 heard of the oil pressure sender leaking badly? I had a sending unit go on my Camaro and it was spraying so much oil that I had to power wash the bottom of the car to find out where it was coming from. __________________ 82 C60 82 C20 (neverending project) 77 Mercedes 300D (gets me to work)

03-16-2010, 10:01 PM	#10
po_bird Registered User Join Date: Oct 2005 Location: MUSKOGEE, OK Posts: 229	Re: any1 heard of the oil pressure sender leaking badly? Its common for the pressure sending unit to leak when it goes bad __________________ 72 SIERRA LB 74 C10 SB 85 C10 SB 75 EL CAMINO SS



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