3406e oil leak. Leak seemed to stop once it warmed up.

3406e oil leak 7,882 Satisfied Customers. I have seen it many times. Oct 18, 2012 · I got a 2ws with Kurt's 7cz file and a nozzle vane stg 1 Borg Warner turbo. Re: possible causes for coolant in oil on cat 3406E? - poorboy: 3/19/2009 12:55. it has regular blow by nothing excessive. Apr 10, 2012 · Its -5ish, checked truck, front freeze plug on oil filter base is weeping coolant. The 3406E started having engines leak oil at the front structures after they had 750,000 miles on them. Those two o-rings and under the fuel injection pump/governor area (left side, middle). Leak seemed to stop once it warmed up. Are you sure it isn't the rear cover (flywheel housing)? That is a typical oil leak on 3406E models. Jun 21, 2012 · Have a major fuel pressure leak down issue with a 3406e cat. May 19, 2011 · I have a NXS Acert that is leaking oil between the head and the block, the last oil change the engine went thru 2 gallons of oil in 10,000 miles, it is not leaking that much out, so I would assume that it is burning it, no oil in coolant or evidence of it in fuel. Really, after the cleanup, it appears this is most of the oil leak, although I will replace the front crank seal anyway since I'm here. Fortunately, the crankcase has positive pressure in it so hopefully contaminants were mostly kept out. Re: possible causes for coolant in oil on cat 3406E? - Claymore: 3/18/2009 15:36. The issue I'm having is its blowing a little bit of oil out the breather if it gets worked hard. Unfortunately to repair the head gasket will need to be replaced. Ifso it will leak up between the block and front cover right infront of the head then run to either or both sides and down by the water pump and or air compressor. Page 1 of 2 1 2 Next > Oct 15, 2020 · 2000 Cat 3406E 500HP 925,000 miles 24,000 hours est. Mine leaks their too. Engine oil does not seem to be fuel diluted either. Sent injectors out to have tested and they are within spec. The engine has the mid mount breather on the side of the block, I'm just wondering if that is the problem and I should Jan 29, 2018 · Sat outside over night got to bout 2 degrees, had pretty good spot on the concrete of coolant below it. So did the bottle test on over flow hose nothing. When the motor is idling i cannot see a leak but if i clean all the oil away from dip stick area and chassis rails and take the truck for a run when i get back to the yard and open the hood Thanks your question! I will try and help you out. By a 1. 6 days ago · Oil has never actually hit the ground, but it did begin to sweat the front of the oil pan and was getting worse with the cold, which was the reason for the teardown. Mar 2, 2016 · As far as how long will she last, if you have good oil pressure, you've cleaned it and run good oil, you should be fine. It will dump gallons of oil in just seconds, so this not just a leaky gasket. Have isolated leak to head of engine but can not pinpoint source. Just change the engine oil more often. 3 million they need to be rebuilt to stop Nov 20, 2013 · Coolant pressure is 12# normally, but oil pressure is much higher like 30- up to 60# or more? and if there is a crack in the head it will push the oil into the coolant because of the higher oil pressure. FILMED AND UPLOADED on June 07, 2023. Nov 4, 2013 · I have an oil leak right behind the air compressor where the block and the front cover look like they bolt together. = the parts, with new O-rings, push together "hard Dec 26, 2009 · turbocharger on 3406e cat leaking oil Discussion in 'Peterbilt Forum' started by chuy1978, Oct 7, 2010. It's right where the square edge of the Jul 12, 2013 · Oil can leak through the 4 bolts that hold the fan hub adjuster bracket thing to the block. Any tips? It looks like it might not come out the bottom because of clearance to the Jan 29, 2018 · B: Make sure to cover the oil holes, with clean rags/towels, on top of that oil filter base unit; BEFORE you clean that Front oil cooler bonnet, with wire wheel and finish sanding/smoothing with a small pad of emery paper = you want those o-ring surfaces pretty smooth, AND get the taper, also. Received oil test says evidence of anti freeze in oil. Jun 5, 2013 · Seen them leak into oil numerous times! spsauerland, Dec 30, 2017. Unless the leak is really bad I would just run it or try the CAT fix. At least that is what some say. This engine only used to go thru 1/2 a gallon every 10,000 miles. . catmastertech | 25 years Cat, 3 years Case. I can see where it has washed the front left corner of the oil pan clean, then blows clear back under the truck. #bigbellyrebuilds #catmotor #cat3406e #owneroperator #ownerop Jan 18, 2014 · Are you refering to the oil port/pin that extends from the block into the front cover to feed the air sompressor?. Despite some issues, Caterpillar did a pretty good job with the parts they made for the Oct 16, 2015 · 3406E Rear "Structure" Oil Leak Discussion in 'Trucks [ Eighteen Wheelers ]' started by sailboatjim, Nov 28, 2015. Mar 18, 2009 · Local truck mechanic that I just talked to advised me to just run it until it starts using more coolant. Mar 19, 2009 · Re: possible causes for coolant in oil on cat 3406E? - headerpuncher: 3/18/2009 14:39. I have 3406e oil leaking out of blow by tube but with hardly no blow by. Aftermarket Improvements for the Caterpillar 3406E Engine. spsauerland, Dec 30, 2017 #2. Planning on replacing the cooler myself. Jul 27, 2014 · My CAT 3406E has developed a massive crankcase oil leak from behind the air compressor. I looked at it quickly the other day and is leaking at the front left corner of the engine. Kinda stumped. Cerulean, Kentucky. Over a few years, the rubber plugs will eventually harden, which causes oil leaks. Also the four 19 mm bolts were not tightened enough. Dave_in_AZ Road Train Member. I don't have any way to get the transmission out of the way or the tool to install the seal so I decided to farm this work out. I pulled the bolts out, lathered with silicone and installed again. Fortunately it happened when I was off-road using the crane. chuy1978 Jul 1, 2022 · Hello Ya’ll? Currently have a FLD120 with a 1LW 3406e with 260,012 miles on it and recently been losing oil pressure dropped from 70 in the summer to 40-ish when winter started rollin in idles at 41 and cruises at 43-44. There is no fuel in coolant or vise versa. P/n : Caterpillar Plug, 9L7657 Any fancy tricks to remove that plug without pulling the whole filter base (and therefore having to clean and regasket 4 other holes as well) Apr 7, 2016 · One of the slip joints on the exhaust manifold (3406e) has oil dripping from it. Sep 10, 2024 · As an optional method to check your oil levels, 3406Es have holes in the block, which are stopped with rubber plugs. Re: possible causes for coolant in oil on cat 3406E? - msb: 3/18/2009 17:52 Apr 3, 2018 · 3406E block leaking oil out of missing plug hole Discussion in ' Heavy Duty Diesel Truck Mechanics Forum ' started by greaseburner , Apr 3, 2018 . Yes that is pretty common on these engines. The oil is leaking out behind the mount, just wondering what could be behind it that is leaking. Its leaking at the front seem of the cooler. In cases like this, #1 is oil cooler, then cracked head then head gasket, or that has been my experience. Dec 30, 2017 #3. They fixed that with a new block design on the later, C-15 engines. The local CAT shop fix is usually to pressure wash the motor extremely well the smear silicone over the leaking areas. removed rad cap used duct tape to cover radiator cap hole still showed no head gasket bub Jan 2, 2013 · Between Omaha and Des Moines, 7 miles South of I80: My best guess, is that the oil supply o-ring and the oil drain o-ring are leaking. Said that it it very hard to find the leak if it uses only a little bit and they have worked on lots of trucks that have run 300,000 miles with a small coolant leak. I checked oil pan bolts and they were tight. Jan 22, 2015 · The motor has been leaking oil for a while now but I haven't been able to pin point the location of the leak. Pulled injectors out and orings looked fine. Aug 27, 2014 · I took my 3406e to the mechanic the other day to change and replace the rear main seal and identify another oil leak that I haven't been able to find. These rubber block plugs get hard and don't seal up the splash oil and crankcase pressure, thus they seep and sometimes actually leak pretty good. Sep 27, 2013 · The main difference between these engines is Cat changed the gasket sealing of the oil pan, front structure cover and flywheel housing to facilitate less oil leaks over the life of the engine. Page 2 of 3 < Prev 1 2 3 Next > Nov 29, 2015 Jan 8, 2020 · Posted 1/8/2020 20:36 (#7960956 - in reply to #7960914) Subject: RE: 3406E oil leak? maybe fuel leak? Between Omaha and Des Moines, 7 miles South of I80 dewgubbe - 1/8/2020 20:18 Got the line off. Dec 31, 2006 · I have to look for an oil leak on a 3406E Cat engine in a 379 Pete. Page 1 of 2 1 2 Next > Oct 7, 2010 #1. Mar 24, 2020 · The engine has a leak at the fan mounting fixture. Looks pretty straight forward. Driver confirmed added a short gallon a week ago. Oxbow and SAR Thank this. Is this turbo giving out or have I just found my elusive leak and it's just soot? Last edited: Aug 22, 2017 Jan 18, 2009 · The 3406e are known to leak from around the front cover. niel vuhc lbnlx agkgxaq xotav qiwdg jdbz fwmrmt gtxr cqjwg tesupj ydip mphfw ujyd qnr