fuel injector
Thread Starter
|
Cruiser
Joined: Dec 2006
Posts: 183
Likes: 2
From:
fuel injector
Does anybody know if anyone ever blueprints stock injectors, I still have the stock throttle body and from what I 've readI think I'm going to keep it, but no matter what I do I cant tune the rough running, and hesatation out of low RPM's, after she get above 3000 hold on but this low RPM stuff has got me stumped
Outstanding HDF Member
Joined: Jul 2007
Posts: 2,609
Likes: 1
From: Indy area
RE: fuel injector
Is there much you can do with them? I'm thinking the best thing would be to grab a handful and pick a good match for flow rates with the same (various) signals. Or at least, with just two to pick from, put the one which requires greater duty cycle into the cylinder which will cause the least amount of problem when high duty cycles are being used (I forget which one of the two that would be).
Road Master
Joined: Dec 2006
Posts: 1,058
Likes: 6
From: Omaha Nebraska
RE: fuel injector
The first thing I would do is an ohm check of the injectors, not sure what they should be but they both should be the same within a few tenths of an ohm. I've seen many injector's internal windings short out to one another due to alcohol desolving the shellac type coil insulation causing the injector to not operate correctly, sometimesonly at certain RPMs. The problem is that this problem only occurs when the injector reaches a certain temperature so I used to do it when engine was cold and when engine was hot. I'm not sure if anyone actually blueprints them, when I was in the fuel injection business we used to buy large quantities, test aseveral of them, mix and match until we got sets of them muchless then the factory accepted 5% spread and sell them as matched sets, some call that blueprinting???. If you think that you may have an injector problem there are companies that flow test and cleanthem, such as www.rceng.com.Ask around, there may be someone in your area but make sure they have the right equipment to doit with, can test at various pulse widths and have ultra sonic cleaning.
Thread Starter
|
Cruiser
Joined: Dec 2006
Posts: 183
Likes: 2
From:
RE: fuel injector
Thanks for the advice it gives me a place to start, I've heard mixed reveiws on dual runners and larger throttle bodys so I wasnt planing on changing it but I've got to do something different. It seems that no tuning changes make the problem go away
Thread
Thread Starter
Forum
Replies
Last Post
FrankPerk1
Exhaust System Topics
4
Feb 15, 2013 01:50 PM
sincityharley
Ignition/Tuner/ECM/Fuel Injection
0
May 14, 2011 12:20 AM
