Originally Posted by Brad Green
Well, guess that explains why trying to run a fine wire through the heater block to clear a plug never worked for me! Any ideas how to unblock that puppy? Thanks for the pictures (and fogger sacrifice!), I've been tempted to do that myself, just never worked up the courage!
If you have a heater block that is completly clogged up and you can remove the block from the housing, I would recommend the following, 1st try compressed air, if that dosent work put some CLR ( Calcium - lime rust remover)in there for a few hours, that will dissolve just about anything if you let it set long enough, however if you use the CLR then you must COMPLETLY CLEAN OUT THE CLR after you are done becasue if you dont you will have CLR steamy fog and that stinks to high hell and will burn your eyes extremely bad.
It never fails, we hire a new guy here at the shop and they will forget to rinse out a block and they fire it up with CLR residue in there and we have to open the doors and turn the fans on and the smell wont go away for days.
Seriously after you have the block out you can try a lot of different methods to get the block unplugged.
You just dont want to run any chemicals or pressure through the pump, those things are friggin fragile, matter of fact while your messing with the block dont let the pump inside dry out, keep it wet, plug up the end of the pump.
The only thing is im not sure if the CLR will work on these smaller cheaper blocks, from what im seeing the passages are friggin tiny compared to the higher end ones like Martin / Jem or Lematries and the trick is getting the CLR where the blockage is.
If I get a chance and have a cheap clogged up fogger come our way I will try it just to see if it will work on the smaller cheaper ones.
P.S. Just dont go trying to force CLR in there with high pressure theres always the chance of it getting in your eyes, that stuff burns.