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I have a d343 caterpillar marine engine that has a crack in the exhaust elbow and when engine is running water leaks out of it and water comes out of the exhaust what could cause this?

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Old age??? getting hot with no water going through it then cooling to fast when water got to it, if its cast iron,,take it off and heat it up before welding the crack up,,,if its steel just weld it! easy huh?

Posted on Jul 06, 2010

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2 Answers

Car wont start


Check the intake elbow to be absolutely certain it doesn't have a rip or tear in it (them) where it connects to the throttle body, and on Mass Airflow Sensor. There can be no leaks there. Get a spray can of Mass Airflow Sensor cleaner and clean the MAF. Remove and inspect the ribbed elbow, checking for holes worn in it that could leak air. If the amount of air entering the throttle body differs from what is sensed by the MAF sensor, the mixture will be wrong and make the engine run poorly. If there is a leak before the MAF sensor it doesn't affect the running of the engine. If you haven't run Fuel Injection cleaner in the gas, try STP Super Concentrate (2 small bottles or one large). Also check vacuum lines are not cracked (if so replace them). Throttle body must have a good seal to the intake manifold.

Jul 05, 2014 | 2002 Chevrolet Impala

1 Answer

Engine temp is 190 -195 degrees D343 marine diesel. Is this too hot?


You have not mentioned the units of temperature. If it is in Fahrenheit, this is quite normal operating temperature.

May 29, 2014 | Cars & Trucks

1 Answer

I got a lot of water coming out of the exhaust from my cooling system.....I know it's from there because I heard it going into the exhaust when engine was off as I poured water into the radiator.....when I...


yesn it should sounds like you have a blowed head gasket leaking into the exaust you should have the head checked for cracks and check the engine block visualy for any cracks

Oct 08, 2013 | Cars & Trucks

1 Answer

When I put water in my 97 Tahoe it starts leaking heavily from the caddilac converter and around the muffler and exhaust pipe... What is this a sign of cracked head? Blown head cracked block? Intake...


Sounds like more water than can get out a crack. Check if you have a frost plug on the block has come loose and leaking. There will be about 3 on each side of the engine block, located just below where the exhaust manifold mounts to the block. It's a pretty easy repair, provided there is enough room to work where it is located. Sometimes a smaller such plug will be found on the rear of the engine. The coolant must be leaking externally and running and dripping off your exhaust .

May 16, 2013 | Cars & Trucks

1 Answer

My john deere marine engine is loosing water out the exhaust pipe


sounds like head gasket. but check the head for cracks like hairline cracks usually between the valves on the inside before replacing

Oct 11, 2012 | Cars & Trucks

1 Answer

My 97 honda accord is blowing white smoke and running rough then i went to start it now it wont start


Sounds like either a blown motor (rings need replaced) or a bad head gasket or cracked head.
If the rings are bad your car would have felt like it was losing power because the engine will no longer have the same high compression that it's required to turn the wheels. You may have heard your engine knocking or seen a light blue colored smoke coming from your exhaust as a result of your engine burning up oil in the combustion chamber from the rings leaking.
If your head gasket is leaking or your head is cracked you'd likely find milky looking oil when you drain your oil from water/antifreeze being mixed in and noticed a white smoke coming from your exhaust that is actually water vapor coming through the exhaust.
If your car was running rough when you last shut it off try pulling all of your spark plugs and either cleaning them or replacing them all. A bad head gasket or bad rings can both foul spark plugs. A car will run rough with 1 or 2 fouled plugs, but once enough foul it will no longer run at all just sit and crank over. If changing the plugs get's it started for ya, check your tailpipe first for water, if nothing, change your oil. If no signs of water/antifreeze or milky colored oil then it's probably rings.

Aug 27, 2012 | 1997 Honda Accord

1 Answer

I have a 98 Olds Intrigue. It is leaking coolant and water from somwhere on the passenger side of the motor. Replaced water pump and radiator is fine. Any ideas?


Depending on what engine you have, the 3.8 has a plastic elbow coming out of the lower intake manifold that goes to the belt tensioner assembly, which has 2 hoses coming out of it for the heater hoses. That elbow likes to crack. The older 3.8 has a nipple there which also likes to crack that runs to the heater core. Either way that's where i'd be checking first.

Oct 20, 2010 | 1998 Oldsmobile Intrigue

2 Answers

P0172 AND P0174 FORD F150 1998


Basically this means that an oxygen sensors
in bank 1 and bank 2 detected a rich condition (too little oxygen in the exhaust).

A code P0172 and P0174 may mean that one or more of the following has happened:
1. The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters can cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
2. There could be a vacuum leak.
3. There could be a fuel pressure or delivery problem

Possible solutions include:
Inspect all vacuum and PCV hoses, replace if necessary
Clean the MAF sensor. Consult your service manual for its location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
Inspect fuel lines for cracks, leaks, or pinches
Check the fuel pressure at the fuel rail
Check the fuel injectors, they may be dirty. Use fuel injector cleaner or get them professionally cleaned/replaced.
Check for an exhaust leak before the first oxygen sensor (this is unlikely to cause the problem, but it is possible)

Jan 04, 2010 | 2006 Ford Mustang

4 Answers

I have a 1994 Gmc Sonoma that overheats and i dont know why. Today, i started it up and it runs perfect. My temp. gauge doesnt move and i replaced the thermostat about a week ago. Also when i parked it...


could have a blown head gasket or cracked head or worse case scenario, a cracked block letting oil into the combustion chamber and out the exhaust. if it is letting coolant into the oil then pull the dipstick and there should be a milky white look to it where the oil tried to mix with the coolant. but its normal to have water alone drip from the drain hole in the exhaust from condesation. for every gallon of fuel your vehicle uses, it produces about a gallon of water thru the exhaust

Oct 24, 2009 | GMC Sonoma Cars & Trucks

2 Answers

1996 Buick Regal Sport - Leaking Plastic Elbow


YOU NEED TO REPLACE THE BELT TENSIONER.
IF YOU BUY THE CARTER BELT TENSIONER AT ADVANCED AUTO, IT COMES WITH: A PLASTIC ELBOW WITH O RINGS, TENSIONER, PULLEY, NEW O RING WHERE THE BELT TENSIONER MATES TO THE ENGINE BLOCK AND NEW O RINGS FOR THE INLET AND OUTLET CONNECTIONS ON THE BELT TENSIONER TO THE HEATER CORE (COST $72).
IF YOU DON'T REPLACE ALL THE ABOVE O RINGS THEN YOU CAN EXPECT MORE LEAKS.
IN ORDER TO REPLACE THE PLASTIC ELBOW YOU MUST REMOVE THE BELT TENSIONER ANYWAY. IF THE BELT HAS SEVERE CRACKS REPLACE IT ALSO.
STEPS:
-REMOVE BELT
-DISCONNECT BATTERY
-DRAIN ANTIFREEZ AND DISCARD
-REMOVE ALTERNATOR
-REMOVE BELT TENSIONER
-REMOVE PLASTIC ELBOW (DO NOT ALLOW BROKEN PIECES PLASTIC OR DIRT TO GET INSIDE THE ENGINE WATER CAVITIES.
-CLEAN ALL CONNECTION WHERE O RING WILL MATE.
-TO REASSEMBLE GO IN REVERS ORDER
-REFILL THE RADIATOR WITH COOLENT 50% MIX USE THE 5 YR GUARANTEE TYPE.
-MAKE SURE THE COOLENT RESERVIOR IS
FILLED TO THE HOT LEVEL MARK.
-RUN THE ENGINE UNTILE IT IT REACHES THE 1/4 % TEMP MARK ON THE TEMPERATURE GAUGE THEN TURN THE ENGINE OFF AND OPEN THE BLEED SCREW ON TOP OF THE THERMOSTAT HOUSING.
ALLOW THE AIR TO EVACUATE, YOU WILL SEE COOLENT COME OUT THEN CLOSE THE BLEED SCREW.
-BE VERY CAREFUL WHEN YOU OPEN THE RADIATOR TO REFILL TO THE TOP.
-REPEAT THIS ONE MORE TIME.
-RUN THE ENGINE AND KEEP YOUR EYE ON THE TEMPERATURE GAUGE' IF THE TEMPERATURE GOES BEYOND THE 1/2% MARK, SHUT DOWN THE ENGINE QUICKLEY AND LET THE ENGINE COOL.
THIS MAY TAKE HOURS TO COOL DOWN BUT THE COOLING SYSTEM WILL TURN FROM PRESSURIZED TO VACUUM AND DRAW COOLENT FROM THE RESERVOIR TO REFILL THE SYSTEM.
YOU WILL NOTICE THE LEVEL DROP IN THE RESERVOIR .

Sep 22, 2008 | 1996 Buick Regal Olympic Gold

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