Question about 2002 Mitsubishi Lancer

2 Answers

1988 Lancer, 5 speed, 4G15 engine. Blow by hose fills the aircleaner with oil.\r\nHave replaced PVC valve, measured & honed bore, replaced rings, vacumed checked valves, replaced valve stem seals. Please help!!!

Posted by on

  • Anonymous Mar 22, 2014

    Getting oil vapors from oil fill cap



2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 131 Answers

This problem is usually the result of worn rings but since you already did that, then check the passage that the PCV valve is connected to. It might be clogged, causing a restriction. If that isn't it, then drill a hole at least a quarter inch in size in the top of an old valve cover filler cap and install it. Drive the vehicle and see if things improve. If they do, then check to make sure that you have the correct PCV valve installed.

Posted on May 22, 2011

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

One of your rings did not seat

Posted on Oct 20, 2011


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Do you have to replace the pistons and piston rings when doing an engine overhaul on an isuzu kb 2.8 1996. the pistons still looks good

we are USA
no KB here, not a one., sorry why ask Yankee's this./..??
your machine shop would not ask that question.
a real overhaul (if measurements prove the case, all parts are MIKED)
1: measure bores. top/bottom and 90 degrees.
2: then bore and hone it to next oversize.
3: then new pistons and rings. and all new bearings

any thing, less is a DIY, trash build.
shade tree , hack.
(the Bernard Lawrence Madoff" ) way. (dig?)
there is one more way, if measurements warrant. IT.
light hone,.
new rings, std, size or what's there, now.
then keep old pistons if lands measure ok. (inspections here are many )

I guess you don't have the micrometer sets to do this right?
inside bore gauge. etc.?
what we do is take the block to a real machine shop
the mic it for a fee. (some do it for free)
then they tell you what is best, and is always the best answer.
why not let a pro rebuild your engine.
for max future life, not lowest cost and shortest life.

ask how to clean a block after honing
its not easy and must NOT BE SKIPPED.

Mar 26, 2017 | Isuzu Cars & Trucks

1 Answer

Compression ring oil gap

4th per inch diameter of bore is the norm for a water cooled engine .so your bore is roughly 3 inches from memory so a ring gap of 12 to 15 th ,check the thickness of the ring in the piston groove as well as up and down movement can and will cause excess oil consumption .give the bore a hone as well with a special honing tool ,not that expensive from a motor factor .

Aug 10, 2016 | Cars & Trucks

1 Answer

Oil keeps getting into the breather changed pc valve hoses and filters

check sump oil level--excessive oil level will cause this
have a compression test done on the engine (both wet and dry) to determine engine condition---excessive blow by from worn rings , bore or cracked piston will cause this --- clean/ replace air filter as if there is a low pressure area after the filter , it helps suck oil vapor from the sump

Aug 06, 2016 | Cars & Trucks

1 Answer

Why is smoke coming out of where i put oil in car

Most likely engine blow by or more precisely ring blow by. All engines have blow by, the PCV valve normally handles this but as the rings and bore ware the blow by increases.
Check that the PVC valve is operating correctly.

Mar 03, 2015 | 2000 Pontiac Firebird

1 Answer

Can a cracked bock cause blow-by and severe pressure in sump so that oil spills from dipstick BLOWING LIKE A COMPRESSOR

you did't state what engine it is. Some diesels have wet liners and others have dry liners. in both cases if the block was cracked you would have a water in the oil problem. I have come across this problem before and it basically comes down to mechanical experience. Rings will only go on pistons one way to work properly. If they are put on upside down they act as oil pumps and collect the oil from the bores and burn it in the chamber. Will empty a 5 gallon sump in 100 miles.
Next some mechanics prefer to save money and so do not replace the liners ( pistons ,rings and liners come as a kit) but rather hone out the bores. Two problems with that idea
the bores do not handle a hone well and so loose the hone marks quickly ( glazed bore = oil usage)
the angle of the hone marks is critical as they are there to trap oil for lubrication and turn the rings to prevent undue wear in the ring grooves. If the oil pistons were used with out new rings that are set to the right gap then the rebuild was a waste of time and money. Diesels are critical on measurements because of the high compressions that they run at and if the gap is at worn out gap the compression fire comes down past the rings and ignites the combustibles in the sump oil. The oil turns black very quickly , disappears or will not drain out when cold ( tar like substance)

Dec 17, 2014 | Cars & Trucks

1 Answer

What would cause oil to sometimes come out the blow by tube on a 12 valve Cummins?

blow by tubes are there to vent combustion pressure in the sump. This pressure is generated by combustion pressures escaping down past the rings. If there is a ring problem or a bore problem this gas blow by becomes excessive . When an engine is running the hone marks of the bore continually causes the rings to rotate and at times the ring gaps will line up and the compression gas goes straight to the sump ( sometimes noticeable blow by). Rings that turn this freely indicate wear and loss of ring tension. The method of diagnosis is to have an evaluation of the engine condition by a compression test.

Dec 16, 2014 | Cars & Trucks

1 Answer

Problem with 2001 Prizm '01 Prizm 5 spd: piston ring change possible without pulling engine (Toyota 1zzfe) Posted by Guest on 11/29/2012 Details '01 Prizm 5 spd: piston ring change possible w

If you unbolt the con rod bearings and push the piston out of the bores, then the rings can be changed but the bores MUST be honed at the same time.

Oct 28, 2017 | 2001 Chevrolet Prizm

1 Answer

Put rebuilt head on now engine smokes and has aqlot of blow by

any time you put a new or rebuilt head on top of a used motor you are going to get some sort of blow by. the more miles one the Rings the more blow by you will have. when you put on the rebuilt head south the new valves. you increased the compression ratio. thus making the worn rings from being able to hold back all the compression. next time at least drop the pan and put new rings in. better new pistions and hone the cylinders. best pull the block have it bored .20 over (which gives you a 2.0L ) have the crank turned. have the cams inspected for ware. and just replace old with new. yes.its more expenses in the beginning but well worth it. because look were you are now. to fix it you now have to start over with a lighter wallet

Mar 17, 2012 | 2007 Chevrolet Aveo 5 Hatchback

1 Answer

1992 5.0 ford bronco oil in aircleaner

old man the engine is old too. the rings do not seat well against the cylinder walls anymore, same with the valves. this creates "blow by", meaning crank case stuff is going through the PCV valve into the air cleaner. take a look at the inside of the valve and the PCV hose and you will find oil residue. time for a rebuild, it has more than done its job.

Sep 06, 2011 | 1992 Ford F150 SuperCab

4 Answers

I have blue smoke coming out of the exhaust of my 1998 dodge caravan

Blue smoke is usually an indication of bad rings, which allows engine oil to be burned as you drive. The fix requires engine teardown, pulling off the heads, removing the oil pan, and removing the crankshaft, rods, and pistons. The cylinders may need to be bored, but at the least they will need cleaned up with a hone. The old rings taken off and new rings istalled. If the engine needed bored, then new pistons must be installed. Then, put it all back together.

Hope this helps you

Apr 12, 2011 | Dodge Caravan Cars & Trucks

Not finding what you are looking for?
2002 Mitsubishi Lancer Logo

350 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mitsubishi Experts


Level 3 Expert

76649 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8522 Answers

Are you a Mitsubishi Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides