dsw
Well-Known Member
What would be the cause At 1800 rpm and over Steam from exhaust has a strong smell of diesel on a Cummings 6bta 5.9 .
STEAM SMELLS OF DIESEL
- Thread starter dsw
- Start date
Moonshiners
Well-Known Member
steam or smoke coming from exhaust? i.e is this the same after warming up.
dsw
Well-Known Member
It starts steaming after its warmed up and under way.
jimg
Well-Known Member
You sure it is not white smoke??
White Smoke
Normally means that the fuel injected into the cylinder is not burning correctly. The smoke will burn your eyes.
Engine/pump timing out
Fuel starvation to the pump causing the pumps timing not to operate correctly
Low engine compression
Water/petrol in the fuel
White Smoke
Normally means that the fuel injected into the cylinder is not burning correctly. The smoke will burn your eyes.
Engine/pump timing out
Fuel starvation to the pump causing the pumps timing not to operate correctly
Low engine compression
Water/petrol in the fuel
Latestarter1
Well-Known Member
DSW
Can you post exactly what your engine model is I.E. 270, 330, 370B.
Forget all the panic stuff, B Series is bomb proof motor, forget timing, compression etc that is for toy engines. Can you give us hours application, history etc.
Assuming we are talking steam and not combustion smoke when did you last change the impeller in your Sherwood pump?
Can you post exactly what your engine model is I.E. 270, 330, 370B.
Forget all the panic stuff, B Series is bomb proof motor, forget timing, compression etc that is for toy engines. Can you give us hours application, history etc.
Assuming we are talking steam and not combustion smoke when did you last change the impeller in your Sherwood pump?
dsw
Well-Known Member
ok its a 180 and it is a recon engine from cummins that was out of a ford cargo that had done 70,000 and i have noticed today that one of the injectors has a very slight leak at the base and as for hours use in my boat i would say about 30 hours and never changed the impeller in the sherwood as the water pumps fine and the temp is normal.
Latestarter1
Well-Known Member
I assume you marinised engine yourself.
What marinisation kit and exhaust manifold did you use?
The Bosch VE pump works real well in marine applications so I am relaxed about the fuel system. However there is a certain lack of understanding about the water flow on some marinisations I have seen.
What marinisation kit and exhaust manifold did you use?
The Bosch VE pump works real well in marine applications so I am relaxed about the fuel system. However there is a certain lack of understanding about the water flow on some marinisations I have seen.
dsw
Well-Known Member
yes i did marinise it my self and the exhaust manifold is a bowman cm600-5020 and the heat exchanger is off a cummins 8ltr made of copper and nickel, the water out injection is 8 inch bellow the turbo bend straight in to 76mm rubber exhaust hose the out via a vetus water trap. air in take is via a donaldson filter unit. and after finding the leaking injector i recon that could be the cause unless any other ideas?
Latestarter1
Well-Known Member
I am familiar with the Bowman heat exchanger for the Cummins B, it is a good unit and works well. However you are using a SenDure unit off a C Series which is a bit of a monster on a B, however it will work.
I am not sure about the manifold, Bowman took over Polar who did a combined manifold/headr tank for the Cummins B which I looked at years ago and Polar design is not good. For a start nobody thought about B coolant temperature, Polar supplied this manifold generally though ASAP with a 7psi rad cap. Cummins run at 15 psi therefore however good your system engine is running too hot.
If you can send link to the manifold I will look it up as I cannot see the number quoted on the Bowman site.
Was your injector leaking externally or are you suggesting that it was 'hosing'?? If it was leaking externally should have little impact.
I am not sure about the manifold, Bowman took over Polar who did a combined manifold/headr tank for the Cummins B which I looked at years ago and Polar design is not good. For a start nobody thought about B coolant temperature, Polar supplied this manifold generally though ASAP with a 7psi rad cap. Cummins run at 15 psi therefore however good your system engine is running too hot.
If you can send link to the manifold I will look it up as I cannot see the number quoted on the Bowman site.
Was your injector leaking externally or are you suggesting that it was 'hosing'?? If it was leaking externally should have little impact.
dsw
Well-Known Member
The injector is leaking up through the thread and I have tried to pull it out to change the copper washer but could not get it out so I am going to try when the engine is hot with a slide hammer or use the compression. Anyway I got the bowman from mike at lancing and it may be a 400 type and I did have concerns about the engine is at an angle of 15 deg but mike at lancing assured me that it will be ok and it has been for the last year or so up until recently when I noticed more steam with the smell of diesel and all I have done recently is change the oil with one that is recommended by Cummins so I still think that its either an injector problem or tappets as they do sound I bit more chatty than they used to. But I am no expert and always listen to others. also the engine water temp is 95 and there is always pressure in the system but not sure what is on the cap. send me your email and i will send you some photos.
Latestarter1
Well-Known Member
Loads of issues, we need to go though each one in turn.
1. In order to get the injector out you need to drift it side to side with brass drift, or use injector slide hammer if you have one. If engine is post 1991 it will have 7mm injectors, if earlier it will have 9mm. If later 7mm injector engine there is a selection of injector washers, always use the thinnest.
2. Mike Bellamy is correct if you are using standard steel truck oil pan, 15 deegrees is O.K, but beware of how much oil you put in, I would suggest that you treat 14 litres in the pan and 1 litre in the filter as the absolute maximum, less is better or else #6 rod will dip and you will be in deep do do. Did you recalibrate your dip stick when you fitted the engine? Is the pan front or rear well.
3. What spec oil did you use? Plain old 15W40 to ACEA E5 is just about the easiest oil to source at very sensible prices.
4. Thermostat opens at 83 Degrees and engine has to be mad hot to get to 95, check rad cap as matter of urgency.
5. Tappets 10 & 20 thou with engine COLD.
6 Check lube by smelling it, if there is a smell of diesel and you are making oil, the wrong spec oil could have caused the oil seal on the front of the driveshaft to break down allow leakage of diesel into lube.
1. In order to get the injector out you need to drift it side to side with brass drift, or use injector slide hammer if you have one. If engine is post 1991 it will have 7mm injectors, if earlier it will have 9mm. If later 7mm injector engine there is a selection of injector washers, always use the thinnest.
2. Mike Bellamy is correct if you are using standard steel truck oil pan, 15 deegrees is O.K, but beware of how much oil you put in, I would suggest that you treat 14 litres in the pan and 1 litre in the filter as the absolute maximum, less is better or else #6 rod will dip and you will be in deep do do. Did you recalibrate your dip stick when you fitted the engine? Is the pan front or rear well.
3. What spec oil did you use? Plain old 15W40 to ACEA E5 is just about the easiest oil to source at very sensible prices.
4. Thermostat opens at 83 Degrees and engine has to be mad hot to get to 95, check rad cap as matter of urgency.
5. Tappets 10 & 20 thou with engine COLD.
6 Check lube by smelling it, if there is a smell of diesel and you are making oil, the wrong spec oil could have caused the oil seal on the front of the driveshaft to break down allow leakage of diesel into lube.
Latestarter1
Well-Known Member
I have sent you a note with my email