Subject	DIY injector flow testing...too imprecise to be conclusive?
Posted by	Evan_Wright (Ca) on April 23, 2013 at 8:01 PM
	This message has been viewed 976 times.
Message	I've been testing everything under the hood trying to determine the cause of a rich idle condition. Last night I decided to send my nismo 740's out to be flow tested. I wanted to send them to WitchHunter Performance to be cleaned and flow tested but they are not accepting any more work for a few weeks at the moment. Looked into a local place but at $35/injector I really didn't want to waste my time and money if there isn't anything wrong with my low mileage nismo 740's. So I came up with a very DIY flow test setup. Tossed some plastic bottles under each injector, attatched ecu grounds to battery negative terminal and spun the CAS with my 12volt drill at full speed for about three minutes. The results looked perfectly level to me but I know a nice narrow glass graduated cylinder would have allowed much better comparison. Obviously this doesn't say anything about the actual flow capability of the injectors...my main concern was that one or more may not be flowing as much as the others. Too imprecise to be conclusive? Video of test
Follow Ups	DIY injector flow testing...too imprecise to be conclusive? - Evan_Wright (Ca) 20:01:02 04/23/13 atleast you know they are all consistent! (n/m) - KongZTT GT28RS MD 20:33:58 04/23/13 Ingenuity. Also, 6 mini flame throwers (n/m) - 280ZuL8R 21:01:29 04/23/13 that is pretty damn clever ingenuity to say the least. - sonazty 21:27:50 04/23/13 Way to think outside the box ! You can rule out - Xteam300TT (South Tx ) 22:15:23 04/23/13 If you time it and measure the final volume of fuel - AHos(Chicago) 22:24:46 04/23/13 Thought about it but would need some quality graduated - Evan_Wright (Ca) 22:42:16 04/23/13 Or a $10 digital scale from Harbor Freight - black300zx 23:03:33 04/23/13 Why bother? The results are consistent. (n/m) - OverZealous (CT) 20:53:19 04/24/13 LOL - awesome work! Three minutes should be very - ConVerTT 22:35:55 04/23/13 dude, thats dope.ha (n/m) - RonDeezy 22:47:44 04/23/13 Lol, with all of that work I would have figured you'd weigh - evan_aggie 22:57:39 04/23/13 You'd still need to have an accurate RPM from the drill - black300zx 23:06:56 04/23/13 If the question is whether they are flowing the proper - evan_aggie 23:28:09 04/23/13 pretty cool idea but what rpm does your drill spin? - fst300zx 00:22:21 04/24/13 Quantity does not matter because: the odds that all of - zellamay 02:03:51 04/24/13 The injectors are not the root issue - look @ your tune, - Bernie (NoVA) 06:47:37 04/24/13 Thanks Bernie. My z ran perfect for a long time after - Evan_Wright (Ca) 08:15:09 04/24/13 I see this excuse in the s-chassis community often. - TriniTT 09:15:03 04/24/13 It's not the tune. Ran fine for years. - Evan_Wright (Ca) 09:24:14 04/24/13 I guess I shouldn't have said tune. - TriniTT 13:09:00 04/24/13 Did a boost leak test twice. Small leak at the shafts of the - Evan_Wright (Ca) 13:24:46 04/24/13 Running rich? - JMartz 08:31:41 04/24/13 Zeitronix wideband. - Evan_Wright (Ca) 09:03:05 04/24/13 Re: Zeitronix wideband. - JMartz 10:21:41 04/24/13 Yeah, I've checked them all out quite a bit using datascan. - Evan_Wright (Ca) 10:47:22 04/24/13 One thing is certain, your engine management system - JMartz 15:13:45 04/24/13 Any things possible. Could even be an issue with the - Evan_Wright (Ca) 15:24:01 04/24/13 very nice job! - OverZealous (CT) 21:04:15 04/24/13
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