Quote:
Originally Posted by Blue)(Fusion
Yeah definitely bad compression in atleast 3 of those cylinders. It may be worn or stuck piston rings causing the compression and oil usage problem.
How does your oil look? Does it darken pretty quickly after an oil change? It may simply be dirty with sludge.
Before you dump alot of money on a new engine, try to clean this one. Some oil additives may be able to help. I highly highly recommend Auto-Rx, which I believe is available in Mexico but don't quote me on that. This product cleans better than any other oil additive and does it in a way to prevent sludge breaking off and clogging oil galleries. The down side is it takes a long time for it to work (hundreds to thousands of miles).
For a quick attempt at cleaning up the engine, buy 1 can of Seafoam, 8 new spark plugs (Motorcraft or Autolite), and 6 quarts of Motorcraft 5W-20 or 5W-30 motor oil and a Motorcraft FL-820S oil filter.
Dump in half a can of Seafoam into the oil. With the engine hot and running, introduce the other half of the Seafoam into the PCV valve. I find that holding the throttle to about 1,000-1,200 RPMs and slowly pour it into the PCV valve works best - do not submerge the valve in it or it will not vaporize correctly. When it sucks it all up, turn off the engine and let it sit for 15 minutes. Start the engine and rev the engine up and down, mostly keeping it at mid-range RPMs. The mid-to-high RPMs help really force carbon out of the cylinders and off the rings. It will smoke ALOT. This is normal. When it mostly stops smoking, drive it around for about 10 minutes and then change the oil with fresh oil.
Wait until the engine cools off and then change the spark plugs. Do not change with the engine hot as they will not torque down properly and can cause thread damage. Only torque down to 16 lb-ft and do not use any anti-seize. You can skip the spark plugs if you've changed them recently, but it's a good idea to do them after a Seafoam treatment and they also may have alot of oil on them from the leaking rings.
Here's a friend's video of his Seafoam treatment through the PCV valve:
http://www.youtube.com/watch?v=yibMhMADJV8 |
Thanks again buddy, you have shed some light with the stuck rings possibility! I'll definitely give it a try, I have a friend who constantly travels to USA I can wait some time and ask him to bring both Auto-RX and Seafoam; I'm not sure about the first one but Seafoam is not available here I'll go and check at Autozone, there are many other autoparts shops but I don't trust their additives since they all are generic brands, most of these are the type you can always find at the supermarket...
About the oil it DOES DARKENS a bit fast I changed it 3 months ago, since then I've only driven the car for 1k miles at much and it looks brown (it's a bit dark actually) already, I think this is definitely too soon to happen. Here is a list of other things I replaced at the same time:
Air filter
Oil filter
Fuel filter
Spark plugs and wires
If it helps the car was sitting for about a year (you can see an older post I opened about it) and the blue puff started some time after the oil change.
One last thing, about the Seafoam I remember you told me not to put it in the oil but to put it in the gas tank instead I guess this will work in long-term BUT since you just advised me to change the oil after the seafoam I'm assuming this will work as a short-term treatment?. How much is a bottle of Auto-RX and one of Seafoam over there?
http://www.automotiveforums.com/vbul...76&postcount=7
Best regards,
Oscar.