White smoke / Unburned gas smell After Engine Overhaul

[reym]

na check na ang ignition timing? how about the high tension cables, baka naman merong putol? these can also cause rough idle and loss of power.

Thanks

I am not familiar with electronic Igniter, so sa dwell angle na lang ako nagbase, pag nag advance pa ako kahit konti eh nag piping (parang may kumakatok), pag nagbawas naman ako ng kahit konti para namang lalong gumagaspang.

Sa wires di pa ako nag check, subukan kong palitan this week.

[speedyfix]

the compression test results seem on the low side.

[4JGtootsie]

Questions lang to help us evaluate your engine problem.
Why did you overhaul?
Condition of the piston? Ring/groove clearance? Standard or oversize?
Condition of cylinder walls? Was it measured? Did honing? Pattern?
How did you do the break in?

[eyshmechanic]

ano ba ang original problem why resulted to overhaul?
please check pcv baka barado na. it is typically located sa crankcase cover. the symptoms you mentioned e parang kulang sa hangin na pwedeng coz of baradong pcv.

[reym]

Questions lang to help us evaluate your engine problem.
Why did you overhaul?
Condition of the piston? Ring/groove clearance? Standard or oversize?
Condition of cylinder walls? Was it measured? Did honing? Pattern?
How did you do the break in?

Well I bought the jeep as is, not running, for a very cheap price, when the engine was started it is killing sparkplugs.
Plus there is a knock sound when the engine is cold.

When the head was separated from the block, we noticed that #4 ring is broken,
the piston is still in its standard size, all the bearings are worn out, even the thrust washer was worn.

The break in procedures:

1. I run the engine at 1,500 rpm for 10-20 minutes,
2. Drove it like an old lady for 20 kms.
3. Drove it at 30-50 kms per hr with slow acceleration and quick decel for a max of 20 kms
4. Drove 80 kms with speed of 20-60km on NLEX, with occasional decel.

[4JGtootsie]

Ok naman ang break in.
Now specifics naman.What is your engine?
Carburated? EFI?

[reym]

Toyota 4K
Carb engine
Contact Points

May drag sya from stop hanggang marelease ang clutch
Fuel mixture screw is not affecting the idle.

Nagkaroon sya konting improvement nung tingangal ang igniter at pinalitan ng contact points.

Kanina medjo may drag pa rin, pero parang malakas ang response ng makina kaysa nung mga unang araw.

May napansin din ako, nag load balance test ako sa 4 cylinder 1 week ago, mahina ang #3 cylinder, kahapon malakas na ung #3 pero mahina naman ang #1, epekto kaya ng pagpapalit ng distributor un?

[eyshmechanic]

subukan mo bunutin yung hose sa pcv and see what happened.

[darksword_08]

dude

nabreak-in ba yan ng maayos?
a good break is having the engine running for 1-2 days w/o using it to go to other places,,

pinalitan mo piston ring, sleeve, bearing and others

gamitin natin ung term na "hindi pa lapat ung piston ring mo" and other parts

kaya need nyan ng good break in,, di pa yan dapat itakbo

kasi since hindi pa umaakma yung parts nya with one another

kung pwede nga hindi dapat uminit makita mo

sa diesel engine ang pinapagaw namin pag new overhaul 1 week break-in na umaandar lang engine sabay buhos ng tubig para di mareach yung specific heat level if nagawa ung good break in yun,, hindi din dapat nirerebolusyon,bad yun for the engine

in your case 4k engine mo,, we requies for the break-in continious running water from hose to radiator to keep the temperature low as possible

di mu pwede buhusan ng tubig yan mamamatay makina..


maybe nafry agad ung pisto ring mo at damage agad sleeve kaya may amoy sunog na langis

piston ring avoid the oil from reaching the top cylinder so that no fumes are created,, if the oil reaches the top cylinder and mix with the gas it will sure create that effect

or the mechanic did not notice the proper alignment or setting a piston ring leaving space for the oil to pass through

lets hope na di nasira ung parts na pinalitan mo,, or else overhaul uli yan

and try to give it a good break-in

about sa regrinding ng camshaft my cetain clearance sinusunod mga machine shop in doing that.. lagi sila ngbase sa size ng bearing na lalagay mo,, they will not grind something na hindi akma sa bearing or else the engine will lost its compression which is important for ang engine to have

[afrasay]

baka di natapat yun timing mark ng maige.