Stihl br 400 problem- spewing oil out the back of motor
16 year old blower, many hours on it, seems to still have lots of power, runs good spewing oil out the rear plastic housing, top of gas tank area making for a nasty mess. Could it the cylinder rings are worn out?
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Re: stihl br 400 problem- spewing oil out the back of...
I would say it is not an issue with the piston and rings, any oil leaking from the muffler has to be unburnt oil from the fuel/oil mix, if not already you should run it at a 50-1 mix, also make sure the engine is not running too rich on the fuel screws, check the condition of the air filter as a blocked filter will richen the mixture.
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Here is a list of oils which are suitable and the correct grade for that engine. There are others of course but I cannot list all of them. Personally I would use the first one on this list but the Castrol Edge is also a very good oil.. Pennzoil Ultra Platinum 10W-30 Pennzoil SAE 10W-30 Motor Oil FormulaShell SAE 10W-30 Motor Oil Castrol EDGE Extended Performance 10W-30
The oil capacity is 1.14 gallons which will include the oil filter..
If there is an issue with the dipstick I would buy a new one. You should still be able to get the correct item. If you are having issues then go to one of the older camaro internet forums and ask them the best place to get a replacement dip stick.
1. If the car has been idle for 5 years, you want to get all the old oil out, any oily sludge that has not bonded to parts and to change the oil filter. Make sure it is warm /hot when draining it and make sure the oil is topped off before running the engine.
Drain the old oil out and change the oil filter. Then get one of the cheaper 10w-30 oils and fill it with that. Then run the engine for at least 20 minutes to get it warmed up and the new oil circulating. If possible take it for a 60 minute drive. Then drain that new cheap oil out and remove the new oil filter and tip the oil out of that also. This process will give your engine a good flushing with new oil.
2. Then fit the oil filter back on and refill the engine with your choice of better oil like the Ultra Platinum 10w-30. Run the engine for about 1500-2000 miles or about 40 hours and then change the oil and oil filter once again.
If the engine has been sitting for 5 years this process will clean it out as well as possible without dismantling it and it will not cost you much especially if you do it yourself which on that vehicle is very easy.
3. You will also need to drain and replace other fluids
- transmission fluid whether an auto or manual trans - bleed the brakes and completely replace the old brake fluid in the entire system (extremely important as the brake fluid will be in terrible condition) - change the differential oil - change the power steering fluid. - (if a manual transmission bleed out and replace the clutch fluid.)
Your off switch may be wet or disconnected. You can try spraying it with a little bit of contact cleaner or WD to clear the moisture. If this doesnt work you can pull a cover and trace back the wire and see if it just fell off or melted. Good luck and be safe!
There are 2 ignition modules that fit that model. 4203 400 1301 and 4203 400 1301. Also check the ignition switch, remove earth cable from ignition module to double check that it isn't a dodgy earth lead. Ignition modules cost around 50 pounds + vat
The only oil in the machine is that which is mixed with the fuel. If the machine is still running well with plenty of compression then i doubt it would be the piston rings. With the limited information i would say to check the exhaust gasket between the exhaust port and the exhaust itself. Sometimes these can degrade and dirty liquid can be blown out of the gap.
A shop like www.arcolawn.com can get you Stihl tools and parts. It sounds like your carburetor is not meetering the fuel properly. A rebuild may work but the carburetors on many machines have fropped in half in the past 2 years.
You may have a bad seal on the crank shaft or an air leak somewhere. If you take it to a dealer most shops charge less than an hour time to perform a full check on the machine and you can do the work.