Diesel Engine: How to cleaning the exhaust system?

**coiter** · February 28th, 2008 02:13 PM

carbon cleaning ba tawag dun? i actually found in the engine bay a tube sticking out of the exhaust system. i think it's where you can stick a hose and let water through and out the back.

anyway, my questions are, how do i proceed? does my engine have to be cold? start the engine first then insert the hose or vice versa? kelangan bang irev or idle lang? they say kasi it would help sa emission test and lessen black smoke.

thanks!

**boybi** · February 28th, 2008 02:27 PM

Just make sure that your car doesn't have a catalytic converter. Water will damage the catconverter.

**XTO** · February 28th, 2008 02:50 PM

Provided that it has no catalytic converter, you can proceed. With the engine off, fill it with water and liquid soap (for better cleansing) till it reaches the tailpipe. Remove the hose, close the lid. Start your engine and rev it till all the water comes out (sigurado bumubula pa yan) then repeat it 3-4 times (without the liquid soap) Very ideal before emission test.

**Esnie.com** · February 28th, 2008 03:26 PM

yes most old diesel engines have this little tube about 1 or 1 1/2 inch in dia installed in exhaust pipe. mostly found in jeepneys but i also have this in my van, very useful to clean the exhaust pipe. Just fill up until water comes out from the tail pipe, for better result yu can add kerosene it will soften the carbon deposits. Mas maganda kung ibabad mo muna for an hour before starting your engine. Then rev your engine up to 3,000rpm. This is proven effective.

**joemarski** · February 28th, 2008 03:27 PM

puede kayang tirahin ko na lang ng "pressure washer" sa tailpipe the rev it up 'til all the water comes out???

then repeat na lang 'til the water clears???

**Esnie.com** · February 28th, 2008 04:06 PM

yes, i you have one you can use it but for best result i suggest you installed small pipe after the exhaust manifold.

**nitrox** · February 28th, 2008 04:25 PM

Any idea if this "little tube" in the exhaust pipe exists in the Isuzu XUV? I tried to look for it but can't seem to find it. Any XUV owners here who had this done (pasadya)?

**XTO** · February 28th, 2008 04:38 PM

Originally Posted by nitrox

Any idea if this "little tube" in the exhaust pipe exists in the Isuzu XUV? I tried to look for it but can't seem to find it. Any XUV owners here who had this done (pasadya)?

Yes it’s just pasadya. it's a 1" iron tube with cap that is welded after the manifold before going down. I don’t have it either and have no plans of having it. IMO it’s a need for those traveling a distance same as diesel PUV in a day to prevent belching.

**coiter** · February 28th, 2008 04:51 PM

thanks for the replies! akala ko continuous yung water. di pala hehe. i tried cleaning it before by inserting the hose from the tailpipe. pero parang hindi nalilinis lahat kasi hindi naman umaabot hanggang dulong loob yung hose. pero grabe ang soot na lumabas. nangitim yung sahig ng garahe. hehe

wala ba talagang formal name yung "small pipe after the exhaust manifold"? :D

**joemarski** · February 28th, 2008 04:53 PM

Wala rin sa Isuzu Crosswind ko

. But my neighbor had one installed (pasadya) in his IC. Sa isang Welding / Vulcanizing Shop niya lang pinagawa. Ang bilis ginawa

. It's quite simple: (1) drill a small hole, 3/4" - 1" dia. (2) weld a fitting Threaded "nipple" in the hole (3) an "end cap" is placed on the other end... finish!!! kaya lang... although negligible, the new look is... well... looks cheap

. you'd want to have your exhaust tube painted...