Warm starts

Elmo370z · 11-17-2016, 10:26 PM

Lately the car has had trouble starting after it warms up. Cold starts are fine. Battery is charged 14v. Only fuel thing I've done is the cjm rrp. Could it be bad gas, clogged injectors, clogged fuel filter or starter going up? Im trying to upload a video.

Elmo370z · 11-17-2016, 10:27 PM

https://www.instagram.com/p/BM76V09BX-n/

SouthArk370Z · 11-17-2016, 10:45 PM

Two easy things are check the air filters and clean the MAFs.

lj909 · 11-18-2016, 12:18 AM

Maybe not getting gas. Double check the rrp

Elmo370z · 11-18-2016, 12:52 AM

Ill havr to.message charles tomorrow.

Elmo370z · 11-18-2016, 12:52 AM

Quote:

Originally Posted by SouthArk370Z

Two easy things are check the air filters and clean the MAFs.

Ill do that to start the process of elimination.

Elmo370z · 11-25-2016, 09:03 PM

Pulled the plugs and cleaned the mafs. Put shell 93, warm starts are better

Elmo370z · 11-25-2016, 09:07 PM

All 6 plugs look the same

Elmo370z · 11-25-2016, 09:12 PM

Little oil, i don't know if that is of any concern

Elmo370z · 11-25-2016, 09:16 PM

valves look clean

SonicVQ · 11-25-2016, 10:03 PM

Plugs and everything else look fine. (Did you really remove the intake just to check for oil residue in the intake?)

Don't guess at the problem. Pick up a cheap ($15-20) OBD scanner and use an app (Fusion or torque) to look at your long term fuel trims. This will tell you if you are running rich, lean or OK.

If possible, it would be good to check the fuel pressure at idle. It should be about 51 psi.

Elmo370z · 11-25-2016, 10:51 PM

Quote:

Originally Posted by SonicVQ

Plugs and everything else look fine. (Did you really remove the intake just to check for oil residue in the intake?)

Don't guess at the problem. Pick up a cheap ($15-20) OBD scanner and use an app (Fusion or torque) to look at your long term fuel trims. This will tell you if you are running rich, lean or OK.

If possible, it would be good to check the fuel pressure at idle. It should be about 51 psi.

No i pulled to check the plugs, car has trouble starting on earn starts. Ill have to look into the obd scanner.

newls196 · 11-26-2016, 04:08 PM

sounds like bad check valve on fuel pump possibly. symptoms would be very similar. I would look into fuel pressure then go on from there

Spooler · 11-26-2016, 07:31 PM

Have you been running an additive. I see some funky stuff on the plug.

Elmo370z · 11-27-2016, 12:12 PM

Nope. No additives. I put new fuel and it got better

11-17-2016, 10:26 PM	#1 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,709 Drives: 09 nissan 370z Sp M6 Rep Power: 295378	Warm starts Lately the car has had trouble starting after it warms up. Cold starts are fine. Battery is charged 14v. Only fuel thing I've done is the cjm rrp. Could it be bad gas, clogged injectors, clogged fuel filter or starter going up? Im trying to upload a video.

11-17-2016, 10:45 PM	#3 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	Two easy things are check the air filters and clean the MAFs. Elmo370z likes this. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

11-18-2016, 12:18 AM	#4 (permalink)
lj909 Track Member Join Date: May 2014 Location: Riverside Posts: 584 Drives: 40th 370Z Rep Power: 12	Maybe not getting gas. Double check the rrp __________________ PW 07 HR350Z R.I.P. Totaled by 82yr old woman 2010 40th Anniversary 370Z

11-26-2016, 04:08 PM	#13 (permalink)
newls196 Base Member Join Date: Feb 2016 Location: Georgia Posts: 115 Drives: 2012 370z Rep Power: 9	sounds like bad check valve on fuel pump possibly. symptoms would be very similar. I would look into fuel pressure then go on from there Elmo370z likes this. __________________ 2012 370z 6MT "Sport Package" Z1 CSC, Z1 Test Pipes, ARK Catback, Injen CAI, SpeedBooster, Custom PCV Canister setup, Z1 dyno tune coming soon

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11-17-2016, 10:27 PM	#2 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,709 Drives: 09 nissan 370z Sp M6 Rep Power: 295378	https://www.instagram.com/p/BM76V09BX-n/

11-18-2016, 12:52 AM	#5 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,709 Drives: 09 nissan 370z Sp M6 Rep Power: 295378	Ill havr to.message charles tomorrow.

11-25-2016, 09:03 PM	#7 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,709 Drives: 09 nissan 370z Sp M6 Rep Power: 295378	Pulled the plugs and cleaned the mafs. Put shell 93, warm starts are better

11-25-2016, 10:03 PM	#11 (permalink)
SonicVQ Base Member Join Date: Jan 2016 Location: Ontario Posts: 230 Drives: G37 Sport Rep Power: 6720	Plugs and everything else look fine. (Did you really remove the intake just to check for oil residue in the intake?) Don't guess at the problem. Pick up a cheap ($15-20) OBD scanner and use an app (Fusion or torque) to look at your long term fuel trims. This will tell you if you are running rich, lean or OK. If possible, it would be good to check the fuel pressure at idle. It should be about 51 psi.

11-26-2016, 07:31 PM	#14 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,830 Drives: 2013 Nismo 370z Rep Power: 2684392	Have you been running an additive. I see some funky stuff on the plug.

11-27-2016, 12:12 PM	#15 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,709 Drives: 09 nissan 370z Sp M6 Rep Power: 295378	Nope. No additives. I put new fuel and it got better