FUEL FILTERS

This week, while my ea81 engine was dynoed the operator "Matt" had changed
jets and cleaned the bowl out of the carbie. Then running the engine -
on the graph there was a sudden drop of power. Checked the bowl for what
appeared a fuel blockage and there was a fine powder at the bottom of
the bowl. So we changed the fuel filter from an EJ type to a clear
plastic one suitable for carbies.

 

All went well and today I cut
open the old EJ filter (this filter had been on the engine about 12
months and 10,000 kms). This is the result.

The white substance is like chalk but harder. The fuel tank is alloy.

Fuel used has been 95 and 98 RON

 

Electrolysis?

 

Edited May 7, 201510 yr by tweety

Possible, but unless you want to fork out for an analysis, you'll never know. Could've just been a bad batch of gas. It does happen.

Sent that pic to my Dyno operator. He said "it looks nasty...must have had water in the fuel a long time ago for it to get that way"  !!!!

 

Makes sense.

Yes, seems like Water / Condensation on your Fuel Tank.

 

Maybe it is time to check it, its Ventilation & Connections...

 

Kind Regards.

I'm in the process of redoing my entire fuel system due to a rust hole in the filler pipe that allowed all sorts of crap to kick up in to the tank. I took the Weber off yesterday and pulled it apart and this is exactly what I found. Everywhere. It's awful. The twin neoprene floats were both cracked as well. I'll post pictures today after work though it's been sitting in jug of carb cleaner since yesterday. This sludgy calcium deposit crap is hard to clean out of everything man.

White vinegar helps to clean up Calcium and Lime deposits.