is my pajero blow-by???

[v22]

today i noticed thin white smoke coming out of my tail pipe... so i checked the breather hose, there is also thin white smoke coming out... IS MY PAJERO BLOW-BY???? btw, its a 4D56 TDIC A/T Pajero..


TIA

[v22]

Blue White Tinted Exhaust Smoke

A perfectly healthy diesel will have no visible exhaust smoke except for start up and acceleration. A little blue smoke (oil burning) on start up is normal and some diesels will have a bluish smoke at idle that should disappear with increased throttle. I don’t like to see any blue smoke but not all diesels are perfect. I remember one of my automotive teachers comments about a light blue smoke from an old truck engine, he said, “That’s just good lubrication”. (Today that truck wouldn’t pass emissions testing, sorry teach). Blue smoke that stays in the exhaust throughout the RPM range is another reason to do more investigating. If I see a lot of blue smoke, red flag! I always keep in mind that blue smoke in the exhaust is a sign of lubricating oil burning in the combustion process, not a definite reason to say that the engine is worn out. Oil can be slipping past the engine rings because it is diluted with diesel fuel. There can be a bad turbo charger seal, a clogged air filter (a very bad sign about maintenance), or there can be oil in the fuel!


Accurate Machinery LLC


other info i got was about PVC's.. clogged up PVC would also seem like a blow by engine.. where is the PVC in the 4d56 engine located?? is it the breather hose on top of the valve cover??



tia

[yebo]

pa-compression test mo para sigurado.

[paj4x4]

I agree. Have a compression test done immediately. Compression figures from a 4d56 workshop manual:
Standard figures - 3,040 kPa * engine speed of 280 r/min
Minimum limit - 2,200 kPa * engine speed of 280 r/min
Difference between cylinder readings should not exceed 300 kPa

Has your rig been burning oil lately? On a diesel engine white smoke usually means diesel fuel could be mixed in your oil. Check the bypass plug of the fuel injector. If there's a leak here diesel fuel goes directly in your engine.

Didn't you have your turbo cleaned/serviced recently? As stated in your post lifted from Accurate Machinery, it could also be a busted turbo charger seal.

Hope this helps.

[v22]

tnx for the tip.. know any shop that does compression testing near manila area?? als how much does it cost?

yes paj, i had my turbo cleaned recently.. and had that seal replaced, will also try to check out if the turbo is oily again..


i have logged 3T kms since my last change oil ad there were'nt any sign of loss of oil... however, last month i went up to baguio and before going down i checked again the oil dipstick, it read lower.. so i added almost half a liter of oil... since then. i've been checking if my rig still consumes, and it does'nt....

[busy road]

What about the diesel-CRDI engines? Is it normal having the same color of smoke?

[paj4x4]

I'd also recommend Autotechnica. Log on to www.4x4ph.com and PM johnqpublic318. He can help you out.

tnx for the tip.. know any shop that does compression testing near manila area?? als how much does it cost?

yes paj, i had my turbo cleaned recently.. and had that seal replaced, will also try to check out if the turbo is oily again..


i have logged 3T kms since my last change oil ad there were'nt any sign of loss of oil... however, last month i went up to baguio and before going down i checked again the oil dipstick, it read lower.. so i added almost half a liter of oil... since then. i've been checking if my rig still consumes, and it does'nt....

[v22]

i never bothered to have it tested.. the oil level does'nt seem to get lower, kaya i ruled out the blow-by issue, but if it is.. i guess its still a long way before i should get bothered by it. :D

[dc_emf]

i never bothered to have it tested.. the oil level does'nt seem to get lower, kaya i ruled out the blow-by issue, but if it is.. i guess its still a long way before i should get bothered by it. :D

Same here. An expert told me that my ride will still last for 3 to 4 yrs before general overhaul be needed. proper oil maintenance lang daw change oil at 4000 km.

[jacorb_88]

same case for me, oil spilling from dipstick. malakas, i tell you. engine response is great. oil consumption is close to insignificant. after several months, i thought my oil level dropped already, hence, i bought 1 liter of Delo MG. To my amazement, i didnt bother to open the Delo MG. The level seemed the same. Had compression test the time i found out about the dipstick oil splurting, the difference between highest and lowest compression was still way within the allowable threshold plus the lowest compression was also above the minimum.

[dc_emf]

same case for me, oil spilling from dipstick. malakas, i tell you. engine response is great. oil consumption is close to insignificant. after several months, i thought my oil level dropped already, hence, i bought 1 liter of Delo MG. To my amazement, i didnt bother to open the Delo MG. The level seemed the same. Had compression test the time i found out about the dipstick oil splurting, the difference between highest and lowest compression was still way within the allowable threshold plus the lowest compression was also above the minimum.

You meanna say your engine is still in good shape. So, how come there is a pressure building up in the crankcase? how is it happening? with such finding in your ride case of blow by is out.

[white hotrod]

same case for me, oil spilling from dipstick. malakas, i tell you. engine response is great. oil consumption is close to insignificant. after several months, i thought my oil level dropped already, hence, i bought 1 liter of Delo MG. To my amazement, i didnt bother to open the Delo MG. The level seemed the same. Had compression test the time i found out about the dipstick oil splurting, the difference between highest and lowest compression was still way within the allowable threshold plus the lowest compression was also above the minimum.

i agree! two thumbs up! oil coming out of the dip stick is not a conclusion that our engine are blow by since diesel engines have greater pressure compared to gas engines.if it does not consume oil then nothing to worry about.

[Field Master]

AutoTechnica along Commonwealth Ave (right after fairview market if you are coming from EDSA) offer compression testing. They charge 300 (or 150 yata) per cylinder for 2.5 - 3.0 liter engine. Here's the contact number: 4616400 - 04, Ernie Reyes Service Manager (9202204845). You have to be early as you need to cool down the engine to conduct compression testing.

[pajerokid]

if your rig consumes oil excessively without leaks.... well... im sorry to break the bad news but yeah, most likely.

But hey, i could be wrong.... compression test na!

[v22]

i checked out the turbo, its not oily... also there's nomore white smoke coming out of my tailpipe today... hmmm its driving me nuts! :lol:

checked again the dipstick.... no signs of oil depletion..


thanks for the info on the compression test. will visit them one of these days..


btw.. my breather hose, on the valve cover is disconnected from the intake since oil coming out of it is another reason for clogging up the turbo... i just leave it pointing down, and its now oily in that area... is it normal that hose to get so oily? ai'nt it another sign of blowby?


tia

[Innova_Boy]

btw.. my breather hose, on the valve cover is disconnected from the intake since oil coming out of it is another reason for clogging up the turbo... i just leave it pointing down, and its now oily in that area... is it normal that hose to get so oily? ai'nt it another sign of blowby?

O/T question lang po...

Is it normal for exmaple like engine of mine D4D to have oil coming out of the breather hose of the valve cover also??

I found this out that there's oil on the rubber tube(where breather hose of valave cover connected) that's sucks air from air filter...

WBR,

[pajerokid]

That happens when you rev too hard on a diesel. Yes it can be considered normal.

[afrasay]

check if there's oil coming out of your dipstick. of course, check this while the engine is running.

[v22]

afrasay;

i checked it yesterday while the engine is running and was already warmed up.. yes, oil seems to splash/talsik upwards.. is this a sign of blowby???

[bogart]

teng,

base sa description mo, mukhang blow-by na nga yan. just to be sure, pa-compression test para walang guessing-guesing.

and if indeed it's blow-by, change engine ka na lang! 4m40 para sulit.