Help. I'm flooded and it won't stop.
07-03-09, 04:40 PM
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Help. I'm flooded and it won't stop.
Okay so here's the deal. I've been doing a bunch of upgrades (SMIC, Intakes, Twin Power, Fuel Pump, Down pipe, Vacuum Hose Job, All New Piping, etc ...) If you haven't seen here's the link to my project. https://www.rx7club.com/3rd-generation-specific-1993-2002-16/my-project-lots-pics-832193/ So while I was in there I also got my injectors cleaned and did the fuel recall kit. Including the pulsation damper. I got everything back together and started her up. Everything seemed to be good except for the idle was a bit off. So I thought all was good and went on to do some interior stuff. Well, I finished the interior and then tried to start her back up and it wouldn't go. It turn over fine but seemed like it wasn't getting any fuel. So I searched and found it was probably flooded. When I started her up the first time I didn't let it get fully warmed up so I figured after reading a few posts I must have flooded it. I know, my bad. I didn't know about the flooding thing. So I pulled the plugs but they were dry except for a little oil. I check for spark, the fuel pump, and made sure everything was plugged in properly, all was good. So I searched some more and found my injectors may be stuck from the cleaning. They sometimes get stuck if you don't run them right away from the cleaning agents. So I pulled the UIM and got them all to click, put it all back together and tried again. It actually tried to start. So I figured it's going to go. It would start up, pretty ruff, idle for abit and then die. I kept trying for a bit and same thing. Then I check the exhaust and sure enough gas was coming out of it. I also looked under the car and noticed some gas dripping from the turbo area. I checked to see if anything was leaking from the fuel rail or fuel hoses and they were dry. So I'm flooded now for sure. So I followed the unflooding procedure and left the plugs out over night. Put in new plugs and tried again. Same thing. It's would start up for a bit, struggle around 500rpms and then start reving up on it's own, like it's going to stick, gets to about 1900rpms and just dies. I tried to rev it while it did this but same thing it hits about 1900rpms and seems like it chokes it's self out. It's definitely getting fuel cause it's still coming out the exhaust. What is going on here??? I check for error codes, nothing. I have power fc and all sensor are good. Tried disabling the O2 sensor and still no go. I don't know what else to try. Any advice would be greatly appreciated. TIA.
07-03-09, 04:49 PM
#2
Okay so here's the deal. I've been doing a bunch of upgrades (SMIC, Intakes, Twin Power, Fuel Pump, Down pipe, Vacuum Hose Job, All New Piping, etc ...) If you haven't seen here's the link to my project. https://www.rx7club.com/showthread.php?t=832193 So while I was in there I also got my injectors cleaned and did the fuel recall kit. Including the pulsation damper. I got everything back together and started her up. Everything seemed to be good except for the idle was a bit off. So I thought all was good and went on to do some interior stuff. Well, I finished the interior and then tried to start her back up and it wouldn't go. It turn over fine but seemed like it wasn't getting any fuel. So I searched and found it was probably flooded. When I started her up the first time I didn't let it get fully warmed up so I figured after reading a few posts I must have flooded it. I know, my bad. I didn't know about the flooding thing. So I pulled the plugs but they were dry except for a little oil. I check for spark, the fuel pump, and made sure everything was plugged in properly, all was good. So I searched some more and found my injectors may be stuck from the cleaning. They sometimes get stuck if you don't run them right away from the cleaning agents. So I pulled the UIM and got them all to click, put it all back together and tried again. It actually tried to start. So I figured it's going to go. It would start up, pretty ruff, idle for abit and then die. I kept trying for a bit and same thing. Then I check the exhaust and sure enough gas was coming out of it. I also looked under the car and noticed some gas dripping from the turbo area. I checked to see if anything was leaking from the fuel rail or fuel hoses and they were dry. So I'm flooded now for sure. So I followed the unflooding procedure and left the plugs out over night. Put in new plugs and tried again. Same thing. It's would start up for a bit, struggle around 500rpms and then start reving up on it's own, like it's going to stick, gets to about 1900rpms and just dies. I tried to rev it while it did this but same thing it hits about 1900rpms and seems like it chokes it's self out. It's definitely getting fuel cause it's still coming out the exhaust. What is going on here??? I check for error codes, nothing. I have power fc and all sensor are good. Tried disabling the O2 sensor and still no go. I don't know what else to try. Any advice would be greatly appreciated. TIA.
Check your boost sensor at the firewall driver side. Make sure it is connected correctly. Also when you perform the deflood procedure, once vehicle starts, rev vehicle and hold it at around 2000 rpm for about a minute or two. Then let see if it idles. That way it should clear out any excessive uncombusted gas inside the chambers. Also make sure you are not having any vacuum leak which can cause your ecu to think you are running way too lean and richens the vehicle up tremendously.
let us know
-AzEKnightz
07-03-09, 05:53 PM
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So checked the boost sensor, pluged in properly and hoses on tight. Voltage on the PFC is PIM=2.40v and when I add 20inHg PIM-1.21v. I can't seem to rev it to 2000 rpms. When ever it gets close it floods it's self out. I'm pretty sure it doesn't have any vacuum leaks, at least not any that would affect it flooding it self out. Like I said it did start the first time and ran for about 10 min without any problems. Is there any other sensors or things I should check?
07-03-09, 06:54 PM
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Can you check the status of your coolant temp sensor? if it is bad, factory might have a default value and therefore also causing your car to be running extremely rich. Do you smell any fuel odor inside passenger compartment? What is your fuel pressure with key on?
07-03-09, 08:44 PM
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Okay so I pulled the UIM off again and wouldn't you know it one of my secondaries was stuck open. So I tapped until it came free but now one of the primaries is stuck closed so I'm in the process of tapping that one out. Doesn't seem to want to give though. I'll keep you guys posted.
07-05-09, 11:25 AM
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Well I finally got it started. Took a lot of ******* around with it though. So I let it idle (smoke) for a bit and then took it for a spin. Seems okay buy my temps were high. I took it back home, kicked on the fans and let it cool down. I thinking it got heat soaked from burning all the gas off in the exhaust and turbos. Does that sound right? I'll try her again some time today if I have a chance.
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07-12-09, 01:38 AM
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Like I stated before they were already cleaned. That's why they got stuck (from not runnig them right away). I got everything back together and took it for a spin. All seems good. Idle was hunting a bit but has seemed to worked itself out. Couple quick questions though. I never had any flooding problems before and the only reason I got flooded this time was a stuck injector. I've read you should always let it get up to operating temps before you shut it down. I know I've moved it in and out of the garage tons of times to shift **** around and not let it warm up without any problems. I'm just wonder if the reason I haven't had any problems is cause I don't have the AWS (JDM car)? I figure with the AWS it revs higher pumping more gas in causing it to flood if you shut it off when it's not warmed up? Does that sound right? Also since all my upgrades I've monitoring my temps pretty closely. I've noticed in stop and go traffic when everything heats up a bit the fans kick on and the water temp goes down fairly quick but the air temps take alot longer to cool down. I've ready a bit on it and some claim it's from heat soak. They suggest moving the sensor. Now, I really would worry to much about it since the actually air temps are okay but it screws up the a/f ratio right? I really noticed it when I was trying to burn off all the excess fuel in my exhaust. My coolant temps were okay but my air temps where through the roof. Made the car run like ****. So I seen this a while back "Fighters Racing Air Temp Sensor" http://fighters-garage.com/rx7.html , has any one used it and does it make a big difference?
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