I'm trying to rule out my injectors causing my KR....anyone know where I can send them and have them cleaned and flow tested? Thanks for any help.
Does any of the types of fuel injector cleaner you just add to the gas tanks do any REAL good???? See it all the time and was wondering!
Yup, both are great selections. JonW owns a injector biz here in SoCal. He can turn them around pretty quick K.
It just works ok IMO. But the best way after you've dropped some serious coin on a motor is to have they flowed and matched.
This comes on a recommendation. http://www.yawpower.com/injectordynamics.html Anyone with experience?
JonW just cleaned, flow matched, and machined a set of injectors for me. GREAT service and quick turn around.
No go on the other injectors I have, bogus info. Dunno if your wasting money, i've never had dirty injectors and tried it to know how well it really works. I did do a Seafoam treatment in the tank about 3 months ago. Didn't see any difference. Nothing i've tried has changed the result...used NOS Octane booster in a half a tank...nothing changed, increased fuel to 11.7 AFR, nothing changes, base spark is 23-25, and it's pulling 8-10 from KR 4500- 6400. it seems to like it around 16-18 degrees. I pulled 6-8-10 degrees in WOT tables and it just drops the base spark and still pulls another 6-8-10 degrees. Unless it's a sensitivity issue, which I don't think it is, it has to be the injectors.
this is an very interesting question - I always buy the STP fuel injetor cleaner every time I change my oil. What is the best product out there? or I'm I wasting my money?
Stevo, it depends on how often you drive it and the kind of fuel you run. For us out here, we don't park'em all winter like you guys. The contaminants in the fuel will collect and clog the injector given enough time. For an easy test. You can remove the injector, fill it with carb cleaner and attach a 9 volt battery to it and watch how fast the fuel dumps. It's not accurate, but comparing each injector this way will give you some idea if you have a issue. Hell, you could even use a stop watch to time it if ya feel like getting fancy. But the only true way of knowing what condition they are in is to have them flowed.
We use a company called EPI (Engine Performance Injectors) to do our flow testing on our injectors. Here's the information: Engine Performance Injectors 12347 Penn St. Whittier, CA. 90602 Phone: (562) 693-8236 or (800) 893-2260 Here's some information on what gets done to the injector Injector tested on a flow bench before cleaning and rebuilding. (Results are documented.) * Injector is disassembled; filter basket, O-ring, and pintle cap. * Injector ultrasonically cleaned, pulsed and back flushed. * Injector is reassembled with new filter, O-ring and pintle cap. * Injectors are cycled through a 10,000 RPM stress test. * Injector re-tested to insure that they are performing properly and checked for leaks. (Results are Documented.) * Any injector still showing irregular spray pattern, leaks or poor flow rates should be replaced. * Each injector is hermetically sealed for shipping, to insure injector remains free of debris and moisture until it is installed. * 95% of injector problems can be solved by proper servicing so long as they are electronically and mechanically sound. * Should be a part of every major tune-up. * Many hours are wasted in E.F.I. fault finding. Eliminate the fuel injectors as a potential fault. * Prevent lean cylinders and warranty claims when fitting rebuilt engines by insuring proper and even flowing fuel injectors.
i guess my question is.... does this happen over 2,000 miles or like 20,000 miles? I have brand new injectors with about 1,200 miles on em...so im not too concerned with it yet...just wanna keep it running good
