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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.

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Old 12-17-2013, 11:53 AM   #1
RETed
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How long were the fuel injectors sitting around before you used them for the first time?
A lot of cleaners will cause the fuel injectors to get stuck if left for over several weeks.
Check with the shop that did the cleaning if this were the case...

You can verify this by "wiring" (i.e. use pieces of wire or wire tie) the fuel injectors to the fuel rail.
Pull the fuel injectors and fuel rail at the same time.
Place a rag under the tips.
Have a friend crank the car...
Visually confirm you get "squirts" of fuel.


-Ted
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because you're only as good as your backup
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Old 12-17-2013, 03:58 PM   #2
jahjahsqc
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Quote:
Originally Posted by TitaniumTT View Post
Walblow... make sure it has decent pressure

How long did the injectors sit after cleaning and before installation

Is this a Jspec engine... the fuel lines are run backwards compared to their USDM counterparts....

My money is on the walblow though... those pumps suck
really? I've used walbro in a few different applications over years and never heard of a problem. I know there were some problems with counterfeits floating around. I'm definitely going to check fuel pressure.

Fuel injectors were cleaned by a fuel injection shop about.... 8/9 months ago?

definitely not a jspec engine.

Quote:
Originally Posted by RETed View Post
How long were the fuel injectors sitting around before you used them for the first time?
A lot of cleaners will cause the fuel injectors to get stuck if left for over several weeks.
Check with the shop that did the cleaning if this were the case...

You can verify this by "wiring" (i.e. use pieces of wire or wire tie) the fuel injectors to the fuel rail.
Pull the fuel injectors and fuel rail at the same time.
Place a rag under the tips.
Have a friend crank the car...
Visually confirm you get "squirts" of fuel.


-Ted
8/9 months after getting them back
I rigged a test light to verify that the injectors were firing. So I know I'm getting a signal to the injectors. If it comes to it I'll have to pull them and test to make sure they spray. I've got a couple other things to check and I'll report my results back.

thanks fellas!
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Old 12-17-2013, 07:15 PM   #3
RETed
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Quote:
Originally Posted by jahjahsqc View Post
8/9 months after getting them back
I rigged a test light to verify that the injectors were firing. So I know I'm getting a signal to the injectors. If it comes to it I'll have to pull them and test to make sure they spray.
I put money the fuel injectors are seized.

Anything beyond a month is no guarantee.

If you have delicate fingers (touching the fuel injectors body) or are very good hearing (use a length of hose stuck in your ear and the other end to the fuel injector body), you can actually feel / hear the fuel injectors clicking...
I normally would just pull them and wire them to the fuel rail, as this test will surely confirm if they are shooting fuel or not.


-Ted
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Originally Posted by TitaniumTT View Post
because you're only as good as your backup
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Old 12-17-2013, 07:18 PM   #4
jahjahsqc
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Quote:
Originally Posted by RETed View Post
I put money the fuel injectors are seized.

Anything beyond a month is no guarantee.

If you have delicate fingers (touching the fuel injectors body) or are very good hearing (use a length of hose stuck in your ear and the other end to the fuel injector body), you can actually feel / hear the fuel injectors clicking...
I normally would just pull them and wire them to the fuel rail, as this test will surely confirm if they are shooting fuel or not.


-Ted
Yup, you typed as i was replying to the other one. I'm going to swap an injector and see what happens.

I decided to pull the connectors and test both of them. Only the bank 1 injector is firing. So i've got some kind of wiring issue... yay

Last edited by jahjahsqc; 12-18-2013 at 08:17 AM.
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