Redex or similar

[felixthelogchopper]

I have an old BG85 blower which I inherited from another member on here. It had been running ok until I laid it up a couple of months ago but when I came to use it again, it was very reluctant to rev up and felt like it was struggling all the time. I had drained of all the remaining fuel before I stored it away last time.I have changed the plug for a new one and also put new air and fuel filters on it. What I wanted to know was can I run some Redex or similar through without ruining the engine?

[spudulike]

I have an old BG85 blower which I inherited from another member on here. It had been running ok until I laid it up a couple of months ago but when I came to use it again, it was very reluctant to rev up and felt like it was struggling all the time. I had drained of all the remaining fuel before I stored it away last time.I have changed the plug for a new one and also put new air and fuel filters on it. What I wanted to know was can I run some Redex or similar through without ruining the engine?

 

If you do, can you vid it and bung it on youtube, should be a right laugh:lol:

 

Personally I wouldn't bother, best thing to do is strip and clean the carb and then keep the saw in tune and use decent/correct mix oil, that will keep it clean.

 

The exhaust port is the usual place where carbon deposits can really build up, you can if careful, bring the piston up to cover the port and then scrape the carbon off and wash it out with WD40. Other than that, take the cylinder off!

[felixthelogchopper]

If you do, can you vid it and bung it on youtube, should be a right laugh:lol:

 

Personally I wouldn't bother, best thing to do is strip and clean the carb and then keep the saw in tune and use decent/correct mix oil, that will keep it clean.

 

The exhaust port is the usual place where carbon deposits can really build up, you can if careful, bring the piston up to cover the port and then scrape the carbon off and wash it out with WD40. Other than that, take the cylinder off!

 

Cheers, I sort of guessed it might be unwise which is why I asked. How about spray carb cleaner?

[GardenKit]

Assuming it is actually a carb problem, the only way is to dissmantle,clean, and rekit.

 

Spraying carb cleaner through the air inlet of the carb will only clean the air inlet and butterflies which wont be the cause of the problem.

 

By all means use carb cleaner to clean the dissmantled carb.

[spudulike]

Assuming it is actually a carb problem, the only way is to dissmantle,clean, and rekit.

 

Spraying carb cleaner through the air inlet of the carb will only clean the air inlet and butterflies which wont be the cause of the problem.

 

By all means use carb cleaner to clean the dissmantled carb.

 

Yup, you really need to spray the cleaner through the H&L screw holes and look for a good spray through the associated jets in to the throat of the carb - that is what is generally required.

[felixthelogchopper]

Assuming it is actually a carb problem, the only way is to dissmantle,clean, and rekit.

 

Spraying carb cleaner through the air inlet of the carb will only clean the air inlet and butterflies which wont be the cause of the problem.

 

By all means use carb cleaner to clean the dissmantled carb.

 

Cheers for the advice.Think I will pull the fuel lines for a check then, if nothing shows up, I will take it in to the local 2 stroke guru.

[spudulike]

Going back to the original problem, reluctance to rev up, get yourself a can of carb cleaner, take the L screw completely out and blast some down there with one of those plastic tube nozzles and replace the screw all the way in and one turn out.

 

Do the same for the H screw.

 

Check the choke circular valve for correct operation - make sure it is held firmly open with the blower in running positionson the throttle control etc.

 

Pull the exhaust, check the piston is good, make sure the exhaust port isn't full of carbon and closed up, make sure the muffler isn't full of crud or blocked in any way - you can just blow down them for a basic check.

 

If you do this, you should find the problem - worth also making sure tha carb is on tight and you have no air leaks.

[felixthelogchopper]

Going back to the original problem, reluctance to rev up, get yourself a can of carb cleaner, take the L screw completely out and blast some down there with one of those plastic tube nozzles and replace the screw all the way in and one turn out.

 

Do the same for the H screw.

 

Check the choke circular valve for correct operation - make sure it is held firmly open with the blower in running positionson the throttle control etc.

 

Pull the exhaust, check the piston is good, make sure the exhaust port isn't full of carbon and closed up, make sure the muffler isn't full of crud or blocked in any way - you can just blow down them for a basic check.

 

If you do this, you should find the problem - worth also making sure tha carb is on tight and you have no air leaks.

 

Cheers for the help!

[agg221]

A bit of an aside, but I've found that if something runs, Aspen is pretty good at cleaning it up. It seems to shift all the oily gunge through quite nicely after a couple of tanks. Probably won't help with lumpy bits or crud in the carb though (and of course if your gaskets are now reliant on ethanol then it won't help at all).

 

Alec

[GardenKit]

A bit of an aside, but I've found that if something runs, Aspen is pretty good at cleaning it up. It seems to shift all the oily gunge through quite nicely after a couple of tanks. Probably won't help with lumpy bits or crud in the carb though (and of course if your gaskets are now reliant on ethanol then it won't help at all).

 

Alec

i agree Alec, Aspen really does seem to clean them up, although in theory, as it contains no solvents it should not be able to.

 

i think it is because Aspen is so pure, it does not leave any fresh deposits, either in the carb or the exhaust, and the old deposits slowly disappear, rather than carry on building up as they would with petrol.

 

New, or rebuilt machines of course, will remain perfectly clean on aspen.