2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

flooding problem

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Old Feb 14, 2007 | 12:19 AM
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flooding problem

I have an 87 Mazda RX-7 GXL n it keeps on flooding only in the morning when i start it what are common problems that can cause this... it isn't the plugs because those are new
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Old Feb 14, 2007 | 12:21 AM
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Read......The...... STICKIES!!!!! https://www.rx7club.com/forumdisplay.php?f=17
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Old Feb 14, 2007 | 12:41 AM
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Leaky injectors are Common problem to flooding.Best to have them removed/cleaned replaced.And Plugs don't have anything to do with the car FLOODING(Mechanically wise).Plugs are electrical.Flooding is Fuel.
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Old Feb 14, 2007 | 12:43 AM
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Well. if he wasn't getting a good spark.... it wouldn't burn.... and it would flood.
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Old Feb 14, 2007 | 01:15 PM
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uhhh yea because the spark is what burns the fuel ... if theirs nuthin there to burn the fuel what happens??? the injectors keep giving gas n theirs no spark so it doesn't get burned n it floods
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Old Feb 14, 2007 | 05:13 PM
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Originally Posted by bshumate2003@yahoo.com
I have an 87 Mazda RX-7 GXL n it keeps on flooding only in the morning when i start it what are common problems that can cause this... it isn't the plugs because those are new

Does this mean the rest of the day when the engine is already warmed up, it starts each time??????

By being flooded in the morning, does this mean it's just reallllll hard to start but finally starts up???????????????

A waterthermo sensor with a broken wire will give the above symptoms. Its input to the ECU is on the GREEN/WHITE wire in the middle plug of the ECU. If you backprobe it in the morining it should read above 1vdc and if its a pretty cool morning it'll be above 2vdc. Fully warmed up it'll read about a half volt.

A lack of this signal makes the ECU default to a temp of 176 F which means the amount of fuel injected will be SMALL vs if the waterthermo input was good on a cold morning, whereupon it'll inject LARGE amounts of fuel (making it start better with a cold engine).

https://www.rx7club.com/attachment.p...hmentid=150448
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Old Feb 14, 2007 | 05:23 PM
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Old Feb 15, 2007 | 10:38 AM
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no it's not hard to start at all it starts right up perfectly but then it's starts acting all shaky and the exaust spits out blue smoke alotta smoke prolly oil ?? but it sounds like a motor boat .... now i don't even clean out my spark plugs and once the rpm drops down to 1000k to 750k it runs amazingly excellent
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Old Feb 19, 2007 | 11:35 PM
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constantly flooding?

i just bought this rx7 and it floods every single time u try to start it ... wat am i doing wrong? could it have any thing to do with it have a broken y-pipe or old spark plugs and wires?
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Old Feb 19, 2007 | 11:47 PM
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Y-pipe? Probably not.
Spark plugs and wires, yes. Your injectors may be leaking a little and it's not sparking properly during cranking causing it to flood. Replace them both and see what happens.
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Old Feb 20, 2007 | 01:11 AM
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Supposing your in the right section...and you do what ^^^ says, get a compression test ASAP.
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Old Feb 20, 2007 | 07:22 AM
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Yeah, compression test before you do anything else. If the compression is sub-par, you will be wasting money doing parts replacement.
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Old Feb 20, 2007 | 07:43 AM
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but the motor was rebuild not to long ago i believe
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Old Feb 20, 2007 | 07:49 AM
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adjust your tps. this has been covered. search.
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Old Feb 20, 2007 | 08:35 AM
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Originally Posted by bmx198706
but the motor was rebuild not to long ago i believe
That don't mean a thing. I suppose the guy who sold you the car told you this. Did you see any paperwork on who rebuilt it? It could have been Rotary Resurrection, or it could have been Zeke his beighbor with the fourth grade education. Or he could have been telling you a story.

Get a compression test done first thing before you do anything else.

B
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Old Feb 20, 2007 | 01:55 PM
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make sure u got the firing order right too the *** that i bought my car from wasn't aware of the leading and trailing pattern
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Old Feb 20, 2007 | 02:48 PM
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I have hte same problem, but I'm pretty sure it's my injectors
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Old Feb 20, 2007 | 02:53 PM
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typical symptom of an atkins rebuild.
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Old Jan 3, 2008 | 07:54 PM
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I had a bad cold start flooding problem. Saw a suggestion from HAILERS in another thread to replace the water thermosensor. It worked. $15 and 30 minutes. Thanks HAILERS.
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