- NEW!
by The Chief on October 4th, 2009
OK, let's start with the basics:
You need three things for your engine to work:
Fire (spark), fuel (gas), and compression (the pistons/valves, or rather the rotary equivalent, operating properly).
Anything out of whack with any of those, and the engine either won't run, or won't run right.
Now, you say it will start if you put some gas directly into the engine. I'm assuming the throttlebody.
This tells me that the spark and compression parts are fine and the problem lies in fuel delivery.
You don't say if the car stays running after initially starting.
But there are a few things you need to check:
Fuel pressure: This is the REAL test of the fuel pump. Just hearing the pump when you turn the key doesn't tell you if it's working properly. If your pump isn't putting out the right pressure, your fuel injectors will not work properly.
Fuel filter: Just replace it. You should do this periodically anyway, and they aren't that expensive. They run less than $30 at AutoZone for your car.
Fuel injector: If your pump is putting out the correct pressure and you're fuel filter isn't clogged, then the next thing to suspect is the fuel injector or the fuel injector pressure regulator.
You can do a rough check of the injector by watching as you crank the car over. If you've got proper fuel pressure, you should be able to smell gas with the throttlebody open to watch. Also, you should be able to see the spray, and it should be a well formed connical spray as well.
WARNING: Don't plant your face directly over the throttlebody if at all possible. If you have other problems and the car backfires, you might singe some hair off your face. Not likely, but still...
I hope this helps.
Starter on an 89 Mazda mpv wagon
by anthony74 on April 10th, 2007
| 1 person likes this
I have a 91 rx7 turbo...last night my antilock light came on, then my interior and head lights got dim. when i tried to accelerate, the rpms or my boost hardly moved, yet i can hear the engine wanting to go. now it doesn't start, anyone know why?
by Anonymous on September 29th, 2008
| 1 person likes this
Hey, i have a 1986 mazda rx7 that will start if we put a bit of gas directly into the engine, we've tested the fuel pump (when the keys turned on you can hear it) and it seems to be working, what else could it be?
by hockeyguy88 on October 4th, 2009
| 1 person likes this
Will Mazda bring back the RX-7?
by AB-Joel on March 5th, 2004
| 2 people like this
Mazda RX7 1985 LIMITED headunit/dash removal for cassette player
by moosecall on January 20th, 2011
| 1 person likes this
You're reading Hey, i have a 1986 mazda rx7 that will start if we put a bit of gas directly into the engine, we've tested the fuel pump (when the keys turned on you can hear it) and it seems to be working, what else could it be?
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