Hi all
we bought a T reg Matiz se for our daughters first car. It broke down
and we had a new head gasket fitted as this is what we were told was wrong.( they also fitted a new timing belt).
The car now goes but looks like a member of the Red Arrows display team!(white smoke)
We have now been told the piston oil seals need replacing.(The oil needs filling up EVERY 3 days or 100 miles)
Problem is the last bill cost as much as the purchase price of the car and the estimate for this work is twice as much again.
Now whilst I am not mechanically minded I do not mind getting my hands dirty but I need instructions to follow.
Any advice would be greatly appreciated.
many thanks.
(28-07-2011 05:34 PM)very poorly daewoo Wrote: [ -> ]Now whilst I am not mechanically minded I do not mind getting my hands dirty but I need instructions to follow.
Any advice would be greatly appreciated.
many thanks.
Hi,
I am a new owner of a Matiz, mostly looking for tips about ours, it's not quite right yet. I don't have much Matiz experience yet but my general comments to get you started, and maybe get a discussion going:
If you are not mechanically minded, then you are at the mercy of the garages. Do you trust the mechanic? If not go for a second opinion.
White smoke often indicates water or oil getting into the cylinder. You don't say it is losing water, so probably oil. That can be the head gasket but if that was done properly then Piston rings/oil seal rings and valve stem seals seem likely, especially if the engine is high mileage. Valve stem seals tend to give you a puff of smoke when you accelerate after a long downhill section. They can be done when you take the cylinder head off, and should have been checked when this was done. Perhaps they were, and it is the rings(oil rings) as the garage says. In which case you are looking at a bigger job, getting the head off and the sump so that you can split the big ends and take the pistons out. I have done this on other engines and to be honest you are going to spend a lot of time and learn a lot, you are basically rebuilding the whole engine. (unless somebody says it is really easy on these, I would be surprised). Based on being "not mechanically minded", unless you have experienced help I don't recommend it. You could talk to some other garages.
The question is whether it will be worth it when you have spent the money. If you got it cheap then maybe it is worthwhile.
If the car is not worth the cost of the job then you might be best to sell it for spares. If your daughter likes it there are plenty around and you could even get the same colour.
I hope this helps and it might even wind up some Matiz experts to correct me. Maybe there is a simpler fault that could cause this......
Poorly; not good news and you probably don't want to hear my opinion. Scrap the car or replace the engine.
Basically it sounds like there is back pressure where compression is leaking past the compression rings and oil rings into the lower oil gallery thus pushing oil up into the chambers where it is being burnt.
It's not as simple as replacing the rings (both upper compression and lower oil seal rings) because the most likely cause of failure is either a broken ring or wear on the cylinder walls which would probably be No. 3 which has the highest wear. Either scenario would require either re-sleeve or boring out the cylinders and fitting over-size pistons (major engine overhaul). Either is going to cost some serious money, probably much more than the car is worth.
Unless you are really attached to the little bus, there is no logical reason to go down this road. Even fitting another engine through the mechanic is going to cost a lot of money. Once again I suggest cutting your losses and walking away. It is very sad that the mechanic didn't give you some honest advice when he took the head off because it would be standard practice for any good mechanic to check the bores and measure them at that stage to assess whether it was worth going any further.
Rob
It would be cheaper to get a second hand engine and while you are at it give the guy who did work on the car in first place a kick up the butt wipe and see if trading standards can do something to me the white smoke is telling me that the head has not been done properly if it is burning oil you would see blue smoke take the oil cap off and see if it has this gungy stuff stuck to the inside
It would be cheaper to get a second hand engine and while you are at it give the guy who did work on the car in first place a kick up the butt wipe and see if trading standards can do something to me the white smoke is telling me that the head has not been done properly if it is burning oil you would see blue smoke take the oil cap off and see if it has this gungy stuff stuck to the inside
The reason why the oil seal rings are stuck to the pistons and the engine drinks oil is:
There was some coolant spilled to the cylinders when the head gasket was removed. The coolant burns and almost like caramelizes in the oil rings.
You will need a new head gasket when replacing the oil rings. Do not put the old one back. Also change the compression rings while at it.
I have done a complete overhaul of my engine because the timing belt decided to broke.
Had to replace 5 valves and valve stems and a new head gasket. After I put the engine back it took oil as it was drinking beer on saturday. Took the engine back apart and realised that on the piston grooves was burnt and sticky coolant.
So replaced all piston rings and all works now.