I spoke to FIC today and they said even not pintle point injectors will still gumm up just inside because of the e85

 

True from what I have learned, but the pintel are more prone to Fail or completly stop flow...

 

Well put


Im also hoping to see some better drivabilty with the new Blue Maxes from FIC.

 

dsm25psi----- Awsome pics! Thanks

 

1 thanks for the info

 

Correct the detergents in gasoline will clean this up. Switch over to gasoline for a few tanks every 3 months or so if your worried about the gunk.



The gum is coming from the additives in the gasoline when mixed with the large amount of ethanol, not from the engine oil. If your injecotrs are getting residue from your engine oil, you have bigger issues.

 

I stil need to check my injectors, but I dont think its getting residue from engine oil. I was just wondering if anyone has experience from this oil? Thanks for the info.

 

The gummy residue seems to be coming only from certain E85 retailers and not others, which suggests that it is coming from the tanks. Perhaps certain retailers did not clean the storage tanks before switching to E85 (which were probably done in many cases from diesel).

When I experienced some gummy buildup on my injector tips (FIC Bluemax), I removed them and sent them to FIC for flow testing. They were not seriously impacted. Other injector types (e.g. pintle) may be more significantly impacted.

Nevertheless, as was mentioned previously, if any residue is present, it seems to dissolve quickly in gasoline. So, it would appear that running a few tanks of gasoline now and then would be a good idea. However, where one finds an E85 retailer that has no gummy residue in his fuel, there is no need to run gasoline ... ever.

 

I agree. Im going to be trying this when my car returns.

 

I would just like everyone to know that the damage to the motor was a damaged valve in the head from to much heat/running lean. The title of this thread is a little misleading. The bottom end of the motor was fine. I was talking to David from Deatschwerks about the injectors and they were cleaned, tested, and are working fine. They were cleaned before they were flow tested so we really don't know if one injector was clogged. This vehicle was equipped with a Flow Blown Racing double pumper system. We wanted to inspect the rest of the fuel system to see if there were any other issues and we did find that there was faulting wiring at the pumps. The car had been sitting for some time and it looks like a rodent such as a mouse made a home on top of the fuel tank by the fuel pump assembly. The power wires for the pumps and the signal wire had the insulation chewed off in several different places. This could have caused the power wire to ground at times or put a load on the circuit. When we took off the injectors when the car arrived they did have the gummy residue on them. Its very hard to say exactly what cause the cylinder to run lean but we believe that it was a combination of the injectors have the gummy residue on the tips and also the fuel pumps wiring. David from Deatschwerks is working on a writeup for customers that are considering running E85 in there cars with tips and information about this gumming that occurs on injector tips. Also we recommend that anyone running E85 occasionally switch to gasoline periodically to clean out the fuel system and the injectors.

 

^^^ So there were many contributing factors. That makes more sense. Thank you for the more complete info.

 

The PTE 1200's are not ball and seat, they are disc type injectors.

 

Dont know about many... beings the wires were together and not touching metal. But what we do know is that the Injectors were CLEANED prior to being inspected.