NEW FEATURE: Post Like system!!!

At long last, we have successfully implemented a comprehensive post rating/like system. With casual readers and visitors vastly outnumbering frequent posters, it is not always apparent to users that others are reading, enjoying and grateful for their posts. If you are too shy to post and want to express your thanks, now you can!

Liking a post is easy - click this thumbs up in the top right hand corner of the post: Image

Can I encourage everyone to use this new feature enthusiastically and liberally and be sure to go back to your favourite old topics and like old posts. This will help build up useful user 'like' profiles and give credit to the users who has provided so much value to this community. This in turn helps guests and newcomers sort useful answers and posters from others.

This goes to regular forum lurkers especially - please show your appreciation with a 'like'!

Featuring:
  • Liked post counters in every user profile (given & received)
  • Liked post leaderboard accessible from the index and Quick Links Menu
  • Receive notifications when your post is liked, configurable from the User Control Panel (in forum notification and/or email notifications available or off)
  • You can remove a like if you made a mistake by clicking the undo button where the thumbs up used to sit (but the user will be notified)
  • Plus more


Read the announcement and post any queries, comments or suggestions HERE

Once read, this announcement can be dismissed by clicking on the 'X' in the top right hand corner.

Fd sputtering, hesitating on 1/4 throttle

Topics specific to rotary engines, cars and car-related issues.
eg: automotive news, concepts, car shows, etc.

Moderators: wotmazda, 7rex, KILLA 13B, matty

Post Reply
Message
Author
Mezz
Registered Rotor User
Posts: 2
Joined: Thu Nov 23, 2017 2:39 pm
Has liked: 0
Been liked: 0

Fd sputtering, hesitating on 1/4 throttle

#1 Post by Mezz » Thu Nov 23, 2017 4:25 pm

Hi everyone im new to this forum and to the rotary world. Im having issues with my stock fd. It would be great if you could help.

So when i bought my car a month ago the boost gauge was not working: sitting at the bottom -20 and it was/still running rich and fluctuating at idle but drives fine on acceleration.

I drove it yesterday and it was running as mentioned above until today. As soon as i drove out my driveway it sputters and hesitates at 1/4 throttle. The boost gauge also started working but was still sitting at the bottom and did not move passed 0. The car does NOT stall or shut off.

I have replaced the vacuum hoses to silicone hoses last week.
Could this be a TPS or MAP sensor issue?

I tried uploading a vid but would not work



DKWW2000
Rotary?... What The?
Posts: 38
Joined: Wed May 18, 2016 9:26 pm
Location: S Devon - ENGLAND
Has liked: 0
Been liked: 0

Re: Fd sputtering, hesitating on 1/4 throttle

#2 Post by DKWW2000 » Fri Nov 24, 2017 2:08 am

I have just had a very similar problem with my FC TII, kept dropping in/out of boost, checked all the obvious until a rotary Guru friend :bow: told me to check the Electric OMP connections/clean them........low & behold problem solved.


Currently Own:- S3 RX7 FB & RX7 FC TII Vert
Previously Owned:- 2 x NSU Ro 80s.....2 x S2 FBs.....DKW W 2000....Suzuki RE5....Norton Commander

User avatar
KYPREO
Administrator
Posts: 14930
Joined: Tue Jul 09, 2002 6:09 am
Location: Melbourne
Has liked: 10 times
Been liked: 1 time
Contact:

Re: Fd sputtering, hesitating on 1/4 throttle

#3 Post by KYPREO » Fri Nov 24, 2017 9:55 am

What version FD?

The solenoid box is known to go. I recall Mazda upgraded in the solenoid box in series 8 models (Version V & VI) but even though they still require replacement periodically. Solenoid and vacuum line issues can be very tricky to diagnose and produce all sorts of weird behaviour.


My Build Log
WTB series 3 RX-7 shifter boot in off black/grey

Mezz
Registered Rotor User
Posts: 2
Joined: Thu Nov 23, 2017 2:39 pm
Has liked: 0
Been liked: 0

Re: Fd sputtering, hesitating on 1/4 throttle

#4 Post by Mezz » Fri Nov 24, 2017 11:03 am

Its a '99 Type Rs version 5

The vac hoses were very brittle around the solenoid box.
Is there anyway to test it?

I've also had a quick look around the omp, seems to be some oil around the hoses. Ill check it out properly when i get home from work



Slides
Rotor Junkie
Posts: 4361
Joined: Sun Mar 05, 2006 6:45 pm
Location: Sydney
Has liked: 0
Been liked: 0

Re: Fd sputtering, hesitating on 1/4 throttle

#5 Post by Slides » Fri Nov 24, 2017 9:58 pm

There is a fault finding post in tech section at fdrx7.com seems to be mostly Australian guys there, not sure why they needed a separate forum but there is a lot of fd specific tech there.

Could be an electrical issue in several places. If it was sriving ok and running on boost But a bit rough you may have a partial tear in the line to the MAP sensor on the firewall. Trace it back to the throttle.


Check over loom plugs and earths too.



Post Reply