Question about Mazda RX-8
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Posted on Jan 02, 2017
SOURCE: 2004 Mazda RX8
Had the same problem today with flooded engine. I tried new plugs ($86.00) and used the clear flood mode but to no avail. Spoke to a tech at the mazda dealership and odd as this sounds it worked. On the right side of the engine on the intake about half way down the runner you will find 2 rubber plugs that cover vacumn ports. The front one is the easier of the 2 to access, hook up a piece of vacumn hose to that port, on the other end you need to hook up a funnel. You will have to adapt the hose up to get it to fit. Remove the fuel pump relay, it is the blue relay at the front of the fuse box and is closest to the radiator. Pour a half to 3/4 quart of transmission fluid in the funnel and have someone crank the engine(with a battery charger or jumper cables hooked to your battery so you won't run the battery down). Leave throttle closed, as the fluid gets sucked down you will here engine compression build and it will act like it is going to start, at that point while it is still being cranked stick the fuel pump relay back in. It should then start, it may spit and sputter but it will run. Remove the hose from the vacumn port and reinstall port plug. The car will smoke for quite awhile but the smoke will finally disipate. From start to finish it only took about 2 min. to get the car started. I asked him if that much fluid would hurt it and he said no. He also said that they see this problem a couple of times a week. He also said that they don't take the plugs out and clean prior to doing the procedure, it will work on the old plugs. This saved me a tow to the dealership and probably a couple hundred dollars.
Posted on Oct 18, 2008
SOURCE: Mazda RX8
It usually is evident. It may sound odd, but if you take out the oil dipstick and smell it, you should be able to smell gas if it's in there. I would still recommend changing the oil just to be safe. Fuel in the oil could ruin the apex seal on the rotors and repairing that will cost alot more than an oil change. Also make sure that whoever changes it uses 5W-20 Non-synthetic oil. Synthetic oil will break down parts in the engine. I hope I could help.
Posted on Dec 29, 2008
Your problem is common in the RX-8. It occurs when you start a cold engine and shut it off before it reaches normal operating temperature. If your car does flood, you can first try depressing the accelerator completely and holding it (which shuts off the fuel pump) and then crank the motor for about 10 seconds (not longer or you may damage your starter). If this procedure above does not work, here is the technique a Mazda dealership will normally use (to be performed at your own risk): 1. Use jumper cables to connect to another car battery. 2. Unplug Air pump connector (the black circular motor housing to the left of the oil filler cap) 3. Take fuel pump fuse out (number 22, a 20 amp, 3 from the top of the second column of the fuse box 4. Crank for 4 seconds, pause for 2 seconds, repeat for about a minute 5. Leave for a minute 6. Crank for 4 seconds, pause for 2 seconds, repeat for about a minute 7. Put fuel pump fuse back in 8. Crank for up to 10 seconds, if it catches but doesn?t start, stop cranking 9. If not started go back to step 3 10. If started, wait 30 seconds for oil pressure to rise 11. Stand on throttle until white smoke stops coming out of the exhaust 12. Disconnect jump leads 13. Leave to warm up on idle for a few minutes 14. Put air pump connector back on (see note 3) 15. Go for a nice long drive to recharge the battery
Posted on Dec 28, 2009
A good way to avoid this ignition problem for furture reference is to use a WARMER GRADE leading spark plug, with the standard heat grade trailing plug.
This is explained in more detail here:
RX8 spark plug & ignition leads install guide
The idea is that a warmer plug reduces the chance of flooding, and it works a treat!
Posted on Apr 02, 2011
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