So ive been fighting an intermittent misfire for ever...

Ommateal · 05-20-2019, 03:06 AM

Quote:

Originally Posted by jchammond

Definitely sounds like low fuel pressure/ sounds like it’s an old carbureted car trying to vapor lock.
You can pick one of these up cheap & extend the line,so you can view while driving...just keep outside of vehicle.

I Deff might buy this right now just because its cool and handy regardless.

jchammond · 05-20-2019, 03:09 AM

Quote:

Originally Posted by Ommateal

I Deff might buy this right now just because its cool and handy regardless.

If you get on their website; they actually have videos of installation instructions...fairly simple.
Just mount gauge in a place that you can view while driving,,,just not inside your car.

jchammond · 05-20-2019, 03:29 AM

Quote:

Originally Posted by Ommateal

I Deff might buy this right now just because its cool and handy regardless.

If you phone & order this/ ask to speak with Jon P. (Their Tuner) & let him know your symptoms & what fuel pressure reading was at dealership.
He will be able to give you some helpful information on it

jchammond · 05-20-2019, 02:43 AM

This is what’s inside your lower fuel pump housing, a paper filter.
This one had just 25k miles on it.

jchammond · 05-20-2019, 02:51 AM

I have also heard a few members speak of throttle body issues causing similar issues...but unsure all details.
Confirm all connections to them are clean & even put a touch of dialectical lube on connection.

Ommateal · 05-20-2019, 03:03 AM

Quote:

Originally Posted by jchammond

I have also heard a few members speak of throttle body issues causing similar issues...but unsure all details.
Confirm all connections to them are clean & even put a touch of dialectical lube on connection.

Way Back when the issue first started I cleaned Mafs, new spark plugs, and took off and cleaned the TBs real good. All that seems fine.

jchammond · 05-20-2019, 03:06 AM

Quote:

Originally Posted by Ommateal

Way Back when the issue first started I cleaned Mafs, new spark plugs, and took off and cleaned the TBs real good. All that seems fine.

How many miles on engine & did it sit through winter with tank of fuel?

Ommateal · 05-20-2019, 03:08 AM

Quote:

Originally Posted by jchammond

How many miles on engine & did it sit through winter with tank of fuel?

55,xxx miles

Uhh I store it each winter in a garage with less then a quarter of a tank.

This issue has been going on for almost 2 years or so... prob not just bad fuel

jchammond · 05-20-2019, 03:10 AM

Quote:

Originally Posted by Ommateal

55,xxx miles

Uhh I store it each winter in a garage with less then a quarter of a tank.

This issue has been going on for almost 2 years or so... prob not just bad fuel

Not good on 10% ethanol fuel,,,always a full tank & some ethanol shield to prevent corrosion around pump etc..

jchammond · 05-20-2019, 03:07 AM

Also, is it throwing a cel?

jchammond · 05-20-2019, 03:33 AM

Also if your fuel injectors are clogged & not atomizing fuel properly- could be sending unburnt raw fuel down exhaust.

Ommateal · 05-20-2019, 03:41 AM

Quote:

Originally Posted by jchammond

Also if your fuel injectors are clogged & not atomizing fuel properly- could be sending unburnt raw fuel down exhaust.

Thats what I was thinking of too, but it just seems kinda unlikely... ive thought about replacing injectors and coils before... its so simple just air, fuel, spark.... but at the same time its like a needle in a haystack.

jchammond · 05-20-2019, 03:48 AM

Quote:

Originally Posted by Ommateal

Thats what I was thinking of too, but it just seems kinda unlikely... ive thought about replacing injectors and coils before... its so simple just air, fuel, spark.... but at the same time its like a needle in a haystack.

Yep; this company is the real deal on injectors...also ensure you have no exhaust leaks around cats or anything & wiring to AFR sensors are in stock location.
May be a bit tricky to find, but you’ll get there.
Dealership only knows to hang parts.
You may ask on Forum of a good tuning shop for 370’s near where you live

Ommateal · 05-20-2019, 03:55 AM

Quote:

Originally Posted by jchammond

Yep; this company is the real deal on injectors...also ensure you have no exhaust leaks around cats or anything & wiring to AFR sensors are in stock location.
May be a bit tricky to find, but you’ll get there.
Dealership only knows to hang parts.
You may ask on Forum of a good tuning shop for 370’s near where you live

Well I deff might have some exhaust leaks now since the minor accident lol.

I plan on getting a new catback system asap... just wanted to get it running as good as stock when i bought it before I start doing any power mods... But at this point I might just go for the mods and uprev and see if that fixes the issue in the process Lmao. Lol prob a dumb idea but im at witt end with possible options for this fix.

jchammond · 05-20-2019, 03:35 AM

Pull this website up & watch videos.

05-20-2019, 02:51 AM	#5 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 58 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684395	I have also heard a few members speak of throttle body issues causing similar issues...but unsure all details. Confirm all connections to them are clean & even put a touch of dialectical lube on connection. __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

05-20-2019, 03:07 AM	#10 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 58 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684395	Also, is it throwing a cel? __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

05-20-2019, 03:33 AM	#11 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 58 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684395	Also if your fuel injectors are clogged & not atomizing fuel properly- could be sending unburnt raw fuel down exhaust. Ommateal likes this. __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

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