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Author
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Topic: How to test injector flow ?
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5OHS5OH
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Member # 4665
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posted
 
 
How do I go about it ? Any special tools I need ?
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89 Convertable GT
BBK Headers, cai
Posts: 1044 | From: San Bruno | Registered: Jul 2004
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5OHS5OH
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Member # 4665
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posted
The deal is I've been chasing a vibration problem for a long time. I've heard that a lean injector could be a possible cause.
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89 Convertable GT
BBK Headers, cai
Posts: 1044 | From: San Bruno | Registered: Jul 2004
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2stangs69-91
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Member # 1951
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posted
yes it is a special machine. Some Ford dealers have them and if you can find a injector rebuilding place local they might have one.
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69 Mustang on hold
1991 LX hatch getting a make over
1994 F150 4X4 351
2006 Yamaha V-max 1200 Modded
Posts: 3711 | From: Redding | Registered: Oct 2002
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166 Merlo
FELONY
MOTORSPORTS
Member # 1549
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posted
have you checked your plugs?
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'89 - Boss Coupe
'70 - Drop Cutthang
'68 - Cougnut
'87 - 0166, Its real
Posts: 3953 | From: Thebay | Registered: Jul 2002
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Blind
2.3L
CAFords OG
Member # 3052
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posted
I usually just hook up a 9volt battery to them.
that tube I filled with denatured alchohol, when you activate the 9volt battery the injector fires and you can see the spray pattern.
mine were all pretty gunky at first, but after a good spraying with this setup for a few seconds the spray pattern improved dramatically.
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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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5OHS5OH
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Member # 4665
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posted
Thanks for the information and pictures too. The plugs are brand new, and I checked them and they look o.k. to me. Thanks for the pics also. I think I'll wait until my mechanic buddy has some room in his home shop and can diagnose this thing. I've already done all I can do. I think this step may be a bit above my skill level. I don't even know what a proper injector spray should look like.
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89 Convertable GT
BBK Headers, cai
Posts: 1044 | From: San Bruno | Registered: Jul 2004
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AJBlackGT
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Member # 3936
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posted
quote:
Originally posted by Blind:
I usually just hook up a 9volt battery to them.
that tube I filled with denatured alchohol, when you activate the 9volt battery the injector fires and you can see the spray pattern.
mine were all pretty gunky at first, but after a good spraying with this setup for a few seconds the spray pattern improved dramatically.
How do you pressurize the alcohol?
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90 Notch
Posts: 1896 | From: Sacramento | Registered: Dec 2003
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Blind
2.3L
CAFords OG
Member # 3052
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posted
quote:
Originally posted by AJBlackGT:
quote:
Originally posted by Blind:
I usually just hook up a 9volt battery to them.
that tube I filled with denatured alchohol, when you activate the 9volt battery the injector fires and you can see the spray pattern.
mine were all pretty gunky at first, but after a good spraying with this setup for a few seconds the spray pattern improved dramatically.
How do you pressurize the alcohol?
I blew on the end of the tube with my mouth.
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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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AJBlackGT
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Member # 3936
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posted
quote:
Originally posted by Blind:
quote:
Originally posted by AJBlackGT:
quote:
Originally posted by Blind:
I usually just hook up a 9volt battery to them.
that tube I filled with denatured alchohol, when you activate the 9volt battery the injector fires and you can see the spray pattern.
mine were all pretty gunky at first, but after a good spraying with this setup for a few seconds the spray pattern improved dramatically.
How do you pressurize the alcohol?
I blew on the end of the tube with my mouth.
If you have air you can regulate it down to 35 psi or so and use that to pressurize the alcohol also.
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90 Notch
Posts: 1896 | From: Sacramento | Registered: Dec 2003
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two-gun kid
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Member # 5325
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posted
where can i buy the alcohol?
[ December 09, 2006, 10:57 PM: Message edited by: two-gun kid ]
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Two-Gun Motorsports
-Team Legion 510-
-KINGTOM Groupie-
Posts: 5799 | Registered: Jul 2005
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Blind
2.3L
CAFords OG
Member # 3052
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posted
I wanted to try it with compressed air but my regulator wouldn't go down under 70psi, I thought that would be kind of hard to watch the spray pattern with. I don't plan on doing it again anytime soon, it took like an hour to do all 8, lol.
I got the alchohol at home depot, it's in a big tin can deal near the paint thinner and other solvants.
denatured alcohol is the main ingredient in carb cleaner/brake cleaner/electrical cleaner spray cans.
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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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Stan G
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Member # 6226
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posted
have you run a balance test ? the ecu will shut off one cylinder at a time and report back if there is a bad firing cylinder.
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1985 RX-7, 347/T-5 , T/F T/W heads, typhoon intake, Tfs2 cam, pulleys, 2500 lbs .
3.63 rear gears , Megasquirt
Posts: 105 | From: Sun Coast , Florida | Registered: Nov 2005
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