Hard to start when warm

Kim · 05-19-2009, 05:53 PM

Hi
My Buddy owns an 04 4-port RX-8.
Car has 60K miles on it and is running strong.
As of the last couple of months, he's been having trouble starting the car when its warm, warm as in normal operating temps.
A simple stop at the gas station is a pain in the hiney, the motor will not catch fire.
If he lets it sit for 5-10 minutes it will start up after a few seconds cranking.
Cold starts is not an issue.

Any suggestions are appreciated.

TIA
Kim

05rex8 · 05-19-2009, 07:25 PM

could be low compression.

also check to see if cat is clogged and if coils, plugs, and wires havent been replaced lately, now is the time.

rotarygreg · 05-21-2009, 06:13 AM

there is an updated spark plug reffered to in the parts catalogue as "hot version". its just the leading plugs that is updated I beleive. Might want to try that if 05rex8 checks out. compression test would the first thing to try anyways, so if he hasnt put new plugs in, may as well just get them and throw them in when you do the compression test.

David Jerome · 05-22-2009, 10:11 AM

Tell him to take it to the dealership as it is still underwarranty and have them do a compression test and replace his engine.

05-19-2009, 05:53 PM	#1
Kim OBEY YOUR MAZDA Join Date: Mar 2009 Location: Denmark Posts: 28 Rep Power: 0	Hard to start when warm Hi My Buddy owns an 04 4-port RX-8. Car has 60K miles on it and is running strong. As of the last couple of months, he's been having trouble starting the car when its warm, warm as in normal operating temps. A simple stop at the gas station is a pain in the hiney, the motor will not catch fire. If he lets it sit for 5-10 minutes it will start up after a few seconds cranking. Cold starts is not an issue. Any suggestions are appreciated. TIA Kim

05-19-2009, 07:25 PM	#2
05rex8 Turbo 8 Join Date: Oct 2008 Posts: 131 Rep Power: 17	could be low compression. also check to see if cat is clogged and if coils, plugs, and wires havent been replaced lately, now is the time. __________________

05-21-2009, 06:13 AM	#3
rotarygreg The Newbie Join Date: Oct 2008 Location: Guelph, Ontario Posts: 9 Rep Power: 0	there is an updated spark plug reffered to in the parts catalogue as "hot version". its just the leading plugs that is updated I beleive. Might want to try that if 05rex8 checks out. compression test would the first thing to try anyways, so if he hasnt put new plugs in, may as well just get them and throw them in when you do the compression test. __________________ 2004 Velocity Red RX8 GS 1984 RX7 GSL-SE project car...forever...

05-22-2009, 10:11 AM	#4
David Jerome RCC Contributor Join Date: Jan 2008 Posts: 713 Rep Power: 18	Tell him to take it to the dealership as it is still underwarranty and have them do a compression test and replace his engine. __________________ David Jerome Broker for Speed For Sale LLC (David@SpeedForSale.com) (Pre-owned RX7/sports car sales & new parts sales/installs/tuning) PM me about low priced, high quality port work