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|19th April 2010, 17:36||#1|
Join Date: Dec 2008
Location: Planet E.A.R.T.H.
Thanked: 7 Times
Smoking too much.
- Year 2000 SUMO
- ~1,24,000 km on odo.
- Been getting black smoke for the past 2-3 months (since getting the turbo over-hauled)
- Till a few weeks back, didn't pay the smoke much notice as engine was smooth, pick-up and torque delivery was good and there was hardly any oil-consumption.
- Now the engine has started making harsh sounds, the pick-up and torque is suffering and it's now giving out clouds of black smoke. It is also now consuming a little oil.
- On asking, the mechanic was muttering about back-compression, any idea about what that is?
Now the question is what needs to be done? Will a change of piston-rings suffice or will I need to go for a complete over-haul?
Looking forward to ideas from all you people.
Thanks in advance and best regards.
|19th April 2010, 17:51||#2|
Join Date: Aug 2008
Thanked: 21 Times
Not guru but I guess with the odo reading you have, over-hauling is required otherwise piston rings change is the standard solution & need for Sumo.
Last edited by Rehaan : 20th April 2010 at 17:02. Reason: First reply, hence no need to quote full post :)
|19th April 2010, 17:58||#3|
Senior - BHPian
Join Date: May 2004
Thanked: 285 Times
Your FIP needs recalibration. Costs quite a bit (~10k).
Go directly to the calibration guys like Bosch. Ensure they give you a 6-month service warranty just in case it starts smoking again.
Its also smoking because of the compression loss due to which the engine oil is entering the combustion chamber. Tell us the quantity of oil loss per 500 kms or 1000 kms.
|19th April 2010, 17:59||#4|
Distinguished - BHPian
Join Date: Jun 2006
Location: Speed-brkr City
Thanked: 4,898 Times
What make is the turbo ?
Where did you get the turbo overhauled ?
Was anything else touched ?
Did these problems start after the turbo was overhauled, or were there from before ?
@Nitrous, the FIP in his Sumo is most likely a Lucas. Good idea to go to a TAS.S / Lucas for that part.
Last edited by condor : 19th April 2010 at 18:00.
|19th April 2010, 18:59||#5|
Join Date: May 2004
Thanked: 8,684 Times
What was the overhaul done on the turbo? was it completely stripped and fixed back with new parts OR just removed and cleaned and put back.
I also suspect the fuel pump.
|19th April 2010, 20:50||#6|
Join Date: Oct 2005
Thanked: 9 Times
What make is the FIP? Mico or TVS. Overhauling the Mico Bosch should not cost more than 2K while the TVS could cost upto 10K. But I strongly feel that the engine has lost power because of worn out Rings/Piston/cylinders. If you need to overhaul the Mico one, I suggest you get it done at Mangalore. He is a really reliable guy who works wonders on the FIP at one/fourth the cost.
Check out the Major and minor Engine overhaul kits available at TASP. There are quite reasonable when compared to buying parts individually.
Last edited by varunroy : 19th April 2010 at 20:53.
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