Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Go Back   Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum > General > Tech Talk > S Chassis

S Chassis Technical discussion related to the S Chassis such as the S12, S13, S14, and S15.


Reply
 
Thread Tools Display Modes
Old 04-13-2019, 07:58 PM   #1
Presto
Leaky Injector
 
Presto's Avatar
 
Join Date: Mar 2019
Location: USA
Posts: 96
Trader Rating: (0)
Presto is an unknown quantity at this point
Feedback Score: 0 reviews
KA S13 KA24E bogging issues

My 240sx will start right up and idle good and without dying. at first will be very responsive with the throttle too. BUT If I continue revving the engine overtime (or maybe it’s just the car being warmed up?) there will be bogging issues and after maybe two minutes of it running. I can only get to the higher rpms if I press open the throttle very very slowly. It will bog out and die if I press the gas too fast.

Parts that have been replaced:
Distributor cap
Spark plugs and wires
New Injectors/seals and injector wiring redone
Throttle position sensor
Egr block off plate
Charcoal canister delete
Iacv cleaned
Throttle body cleaned
Fuel pump has rust but it still delivers fuel there is still pressure

I’ve noticed:
Coolant temp sensor and o2 sensor look pretty done for
Exhaust leaks
Can drive car around without problem at low speed low rpm

Newbie in need of advice S.O.S.
Presto is offline   Reply With Quote
Sponsored Links
Old 04-13-2019, 08:00 PM   #2
Skythe240guy
 
Join Date: Jan 2019
Location: Louisiana
Age: 23
Posts: 5
Trader Rating: (0)
Skythe240guy is an unknown quantity at this point
Feedback Score: 0 reviews
What about the Mass Air Flow Sensor?

Sent from my Pixel 3 XL using Tapatalk
Skythe240guy is offline   Reply With Quote
Old 04-13-2019, 08:20 PM   #3
Presto
Leaky Injector
 
Presto's Avatar
 
Join Date: Mar 2019
Location: USA
Posts: 96
Trader Rating: (0)
Presto is an unknown quantity at this point
Feedback Score: 0 reviews
Quote:
Originally Posted by Skythe240guy View Post
What about the Mass Air Flow Sensor?

Sent from my Pixel 3 XL using Tapatalk
After reading this comment I’m went outside and ran the car, and then I removed the maf while it was idling and nothing changed about the idle or throttle response. Does this mean bad maf? Also one of the tiny springs between the connectors on the maf is missing and the other is glowing red
Presto is offline   Reply With Quote
Old 04-13-2019, 08:21 PM   #4
anthony_240
Zilvia Junkie
 
anthony_240's Avatar
 
Join Date: Nov 2016
Location: Los Angeles
Age: 33
Posts: 489
Trader Rating: (3)
anthony_240 is an unknown quantity at this point
Feedback Score: 3 reviews
Here before you get your ass burned by others to search lol but make sure with your egr block off doesn’t have any vacuum leaks, as well as other vacuum leaks.

KA will bog with a bad o2 and coolant temp sensor. Especially warmed up since it goes into closed loop once warmed up.

Fix your exhaust leaks, that should go without saying


Sent from my iPhone using Tapatalk
anthony_240 is offline   Reply With Quote
Old 04-13-2019, 08:28 PM   #5
Skythe240guy
 
Join Date: Jan 2019
Location: Louisiana
Age: 23
Posts: 5
Trader Rating: (0)
Skythe240guy is an unknown quantity at this point
Feedback Score: 0 reviews
Unplug the maf and run up and down the road. Probably if it's not bogging down after that could be the maf that's what happened with my KA

Sent from my Pixel 3 XL using Tapatalk
Skythe240guy is offline   Reply With Quote
Old 04-13-2019, 08:29 PM   #6
Presto
Leaky Injector
 
Presto's Avatar
 
Join Date: Mar 2019
Location: USA
Posts: 96
Trader Rating: (0)
Presto is an unknown quantity at this point
Feedback Score: 0 reviews
Quote:
Originally Posted by anthony_240 View Post
Here before you get your ass burned by others to search lol but make sure with your egr block off doesn’t have any vacuum leaks, as well as other vacuum leaks.

KA will bog with a bad o2 and coolant temp sensor. Especially warmed up since it goes into closed loop once warmed up.

Fix your exhaust leaks, that should go without saying


Sent from my iPhone using Tapatalk
Yeah on this website people hate on us new guys but it’s alright

I’m planning on fixing exhaust but I don’t hear anything coming from egr block off I tightened it as well but definitely should change temp sensor and o2 then because coolant temp sensor wire is cracked and o2 sensor looks like a burnt marshmallow
Presto is offline   Reply With Quote
Old 04-13-2019, 08:33 PM   #7
Skythe240guy
 
Join Date: Jan 2019
Location: Louisiana
Age: 23
Posts: 5
Trader Rating: (0)
Skythe240guy is an unknown quantity at this point
Feedback Score: 0 reviews
Quote:
Originally Posted by Presto View Post
After reading this comment I’m went outside and ran the car, and then I removed the maf while it was idling and nothing changed about the idle or throttle response. Does this mean bad maf? Also one of the tiny springs between the connectors on the maf is missing and the other is glowing red
Also unplugging maf while idling won't always make a difference

Sent from my Pixel 3 XL using Tapatalk
Skythe240guy is offline   Reply With Quote
Old 04-13-2019, 08:40 PM   #8
Presto
Leaky Injector
 
Presto's Avatar
 
Join Date: Mar 2019
Location: USA
Posts: 96
Trader Rating: (0)
Presto is an unknown quantity at this point
Feedback Score: 0 reviews
Quote:
Originally Posted by Skythe240guy View Post
Also unplugging maf while idling won't always make a difference

Sent from my Pixel 3 XL using Tapatalk
I’ll try to unplug it then run it right now

I unplugged the coolant temp sensor and ran it and nothing changed also when I unplugged the maf it revved up then back to how it was then when I plugged it back in the engine revved up then back down again.

Last edited by Presto; 04-13-2019 at 09:11 PM..
Presto is offline   Reply With Quote
Old 04-14-2019, 03:04 AM   #9
Skythe240guy
 
Join Date: Jan 2019
Location: Louisiana
Age: 23
Posts: 5
Trader Rating: (0)
Skythe240guy is an unknown quantity at this point
Feedback Score: 0 reviews
Quote:
Originally Posted by Presto View Post
I’ll try to unplug it then run it right now

I unplugged the coolant temp sensor and ran it and nothing changed also when I unplugged the maf it revved up then back to how it was then when I plugged it back in the engine revved up then back down again.
So what you're saying basically is it still gave the same result of bogging down still?


Sent from my Pixel 3 XL using Tapatalk
Skythe240guy is offline   Reply With Quote
Old 04-15-2019, 03:27 AM   #10
Presto
Leaky Injector
 
Presto's Avatar
 
Join Date: Mar 2019
Location: USA
Posts: 96
Trader Rating: (0)
Presto is an unknown quantity at this point
Feedback Score: 0 reviews
Quote:
Originally Posted by Skythe240guy View Post
So what you're saying basically is it still gave the same result of bogging down still?


Sent from my Pixel 3 XL using Tapatalk
Yes I’m going to replace the coolant temp sensor and o2 sensor I’m pretty sure it’s the coolant temp sensor though
Presto is offline   Reply With Quote
Old 04-20-2019, 12:31 PM   #11
kyral
Zilvia Junkie
 
kyral's Avatar
 
Join Date: Nov 2012
Location: wisconsin
Age: 31
Posts: 448
Trader Rating: (7)
kyral is just really nicekyral is just really nicekyral is just really nicekyral is just really nicekyral is just really nicekyral is just really nicekyral is just really nicekyral is just really nicekyral is just really nice
Feedback Score: 7 reviews
the cas in the distributor can be the cause of a lot of bogging issues. the working great cold kind of points to cas. they are known for working great warm and falling on their face cold when they fail.
__________________
The Game
you lose haha
kyral is offline   Reply With Quote
Old 04-21-2019, 01:22 PM   #12
Presto
Leaky Injector
 
Presto's Avatar
 
Join Date: Mar 2019
Location: USA
Posts: 96
Trader Rating: (0)
Presto is an unknown quantity at this point
Feedback Score: 0 reviews
Quote:
Originally Posted by kyral View Post
the cas in the distributor can be the cause of a lot of bogging issues. the working great cold kind of points to cas. they are known for working great warm and falling on their face cold when they fail.
Once the exhaust and maf sensor are replaced I’ll check this out!

Last edited by Presto; 04-25-2019 at 01:24 PM..
Presto is offline   Reply With Quote
Old 08-01-2019, 12:25 AM   #13
lonley240sx
 
Join Date: Jul 2019
Location: Oregon
Age: 32
Posts: 1
Trader Rating: (0)
lonley240sx is an unknown quantity at this point
Feedback Score: 0 reviews
s13

well what was the outcome?
lonley240sx is offline   Reply With Quote
Old 08-01-2019, 04:36 AM   #14
Presto
Leaky Injector
 
Presto's Avatar
 
Join Date: Mar 2019
Location: USA
Posts: 96
Trader Rating: (0)
Presto is an unknown quantity at this point
Feedback Score: 0 reviews
Quote:
Originally Posted by lonley240sx View Post
well what was the outcome?
Car is currently running with sock over the intake I’m gonna calibrate tps and fix ignition timing then maybe try to drive it I guess
Presto is offline   Reply With Quote
Reply

Bookmarks

Tags
240sx


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 02:56 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
vB.Sponsors
Copyright ? 1998 - 2022, Zilvia.net