Precision Injector Users Using E85 Beware
Feb 27, 2009, 01:10 PM
#32
Now feel free to check into this, but IIRC, the 1600cc injectors are a different make, different type, and therefore we cannot arbitrarily assume if one make/type is affected, than another would be.
But most importantly, if there truly is some susceptibility of the injectors sold by PTE (and other vendors) to E85, surely it would be something observed by many persons here, and so far, that does not seem to be the case. Unless numerous others report the same observation, I feel we need to view this as an isolated incident and consider that the cause of the damage may not be the fuel, but something else.
But most importantly, if there truly is some susceptibility of the injectors sold by PTE (and other vendors) to E85, surely it would be something observed by many persons here, and so far, that does not seem to be the case. Unless numerous others report the same observation, I feel we need to view this as an isolated incident and consider that the cause of the damage may not be the fuel, but something else.
Apr 1, 2009, 05:46 PM
#40
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Hmm interesting I had a set of PTE 1000cc's that we ran on E85 for a little bit and didn't have any issues, In the last couple months we switched over to the Deatschwerks 1600cc's after doing our re-search to what injector we should go with that would best work with E85 so far not a single problem car runs great no hiccups or anything and this is done on the stock ecu. If you guys are wondering about my fuel setup it go's as follows Deatschwerks 1600cc injectors / Buschur Double Pumper / Aeromotive FPR.
May 15, 2009, 05:31 AM
#41
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I was about to purchase some PTE 1200cc from an online EBay vendor (BNIB). I guess this was an isolatd incident......is there a different type of PTE injector that needs to be purchased.
May 15, 2009, 06:55 AM
#42
Ok, I've just discovered this issue with my injectors, so I have some comments.
I am sending my injectors to FIC, as is, to have Jens flow test them and determine if they are functionally affected.
Meanwhile, I am not yet convinced it is the fault of the injector. It looks to me like the high alcohol content may be dissolving something in the lines, like rubber, and carrying it with the fuel. The fuel atomizes near the injector tip, but the dissolved substance does not, and simply precipitates near the injector tip. It is also present on the backside of the intake valves. If this is the case, the good news is that the buildup should not be present elsewhere in the system.
Now, my fuel lines are Teflon, so that cannot be affected. IIRC, there are only two places in the system where rubber remains, the transfer line at the tank, and maybe a few inches if feed at the pump assembly. I'll have a look at those when I get back to the car next week and report, unless someone else is able to do it between now and then.
I am sending my injectors to FIC, as is, to have Jens flow test them and determine if they are functionally affected.
Meanwhile, I am not yet convinced it is the fault of the injector. It looks to me like the high alcohol content may be dissolving something in the lines, like rubber, and carrying it with the fuel. The fuel atomizes near the injector tip, but the dissolved substance does not, and simply precipitates near the injector tip. It is also present on the backside of the intake valves. If this is the case, the good news is that the buildup should not be present elsewhere in the system.
Now, my fuel lines are Teflon, so that cannot be affected. IIRC, there are only two places in the system where rubber remains, the transfer line at the tank, and maybe a few inches if feed at the pump assembly. I'll have a look at those when I get back to the car next week and report, unless someone else is able to do it between now and then.
May 15, 2009, 10:52 AM
#44
Ok, I've just discovered this issue with my injectors, so I have some comments.
I am sending my injectors to FIC, as is, to have Jens flow test them and determine if they are functionally affected.
Meanwhile, I am not yet convinced it is the fault of the injector. It looks to me like the high alcohol content may be dissolving something in the lines, like rubber, and carrying it with the fuel. The fuel atomizes near the injector tip, but the dissolved substance does not, and simply precipitates near the injector tip. It is also present on the backside of the intake valves. If this is the case, the good news is that the buildup should not be present elsewhere in the system.
Now, my fuel lines are Teflon, so that cannot be affected. IIRC, there are only two places in the system where rubber remains, the transfer line at the tank, and maybe a few inches if feed at the pump assembly. I'll have a look at those when I get back to the car next week and report, unless someone else is able to do it between now and then.
I am sending my injectors to FIC, as is, to have Jens flow test them and determine if they are functionally affected.
Meanwhile, I am not yet convinced it is the fault of the injector. It looks to me like the high alcohol content may be dissolving something in the lines, like rubber, and carrying it with the fuel. The fuel atomizes near the injector tip, but the dissolved substance does not, and simply precipitates near the injector tip. It is also present on the backside of the intake valves. If this is the case, the good news is that the buildup should not be present elsewhere in the system.
Now, my fuel lines are Teflon, so that cannot be affected. IIRC, there are only two places in the system where rubber remains, the transfer line at the tank, and maybe a few inches if feed at the pump assembly. I'll have a look at those when I get back to the car next week and report, unless someone else is able to do it between now and then.
Based on the threads that I've read and my own experience, I'd say that the sludge is caused by something in the fuel. Whether the sludge is the substance in the fuel, or whether the substance is causing some degradation of the fuel lines or other plastic/rubber components, I couldn't say.
May 15, 2009, 02:48 PM
#45
I just did a bit more reading on the deposit issue, and apparently in a DSMLink forum, the black residue is clamied to be a gum in the fuel. Apparently, some kind of gum product, probably from the ethanol manufacturing process, is allowed to be present in the fuel. Standard for E85 composition
Last edited by mrfred; May 15, 2009 at 05:26 PM.