Mazda Rotary Club

Cars by Model Type => 2nd generation RX-7's => Topic started by: peter545 on September 18, 2011, 08:02:14 PM

Title: hello..everyone,please could someone advise me
Post by: peter545 on September 18, 2011, 08:02:14 PM
hi ive got a non turbo 88 rx7,  having a few problems with it at the moment,,,  dificult to start when warm,,,, uses more fuel than any car i know,,, and backfires throu the exhaust continuasly when de, excelerating,, any ideas ?:flamed
Title: hello..everyone,please could someone advise me
Post by: jamison1982 on September 18, 2011, 08:11:01 PM
uses more fuel - NORMAL
backfires - NORMAL

:)

welcome to rx7 ownership
Title: hello..everyone,please could someone advise me
Post by: peter545 on September 18, 2011, 08:38:47 PM
:3gears-rh lol
Title: hello..everyone,please could someone advise me
Post by: m1tch on September 18, 2011, 09:13:43 PM
I know that the EGI sometimes has difficulties starting vs the turbo, perhaps get a compression test done. Also it might be the case that there is a leaking injector - with regards to the use of fuel....I have a turbo II :rollin
Title: hello..everyone,please could someone advise me
Post by: B.Martin on September 19, 2011, 08:07:51 AM
I don\'t know if its just me, but my EGi did seem to use more fuel that my Turbo II does. Saying that, i don\'t use my TII daily so i can\'t be sure :confused:
Title: hello..everyone,please could someone advise me
Post by: Lacey on September 19, 2011, 08:11:22 AM
Quote from: jamison1982;789055uses more fuel - NORMAL
backfires - NORMAL

:)

welcome to rx7 ownership

Same here, \'89 EGI, loud as :censored:, runs so rich you cry and choke if you stay in one place too long, and makes a hell of a racket.

That\'s normal right? :Laugh
Title: hello..everyone,please could someone advise me
Post by: B.Martin on September 19, 2011, 08:13:14 AM
(http://2.bp.blogspot.com/_RS4fX1o3YCA/Sa3ej5svtkI/AAAAAAAAAJg/sjYyA1cpHU4/S220/decal_i_love_re_b.jpg)
Title: hello..everyone,please could someone advise me
Post by: Lacey on September 19, 2011, 08:18:14 AM
Anybody see a problem here? :Laugh

(http://i10.photobucket.com/albums/a127/crackheadmel/uvs050725-001.bmp)

(http://img89.imageshack.us/img89/7045/mazdarx7fc2gq2ou0.jpg)

(http://i35.photobucket.com/albums/d183/RickyG82/l_2a298fa191f4ced257116ab8e1ae2067.jpg)

(http://t2.gstatic.com/images?q=tbn:ANd9GcRZwP1kSygSzA_Xaf9W2ZrfQ05lrdfaml-NdBesOvSSRs4VIBtntl9I9p5j)

(http://www.supra7.net/Supra7/Pictures/FLAMEsig.jpg)
Title: hello..everyone,please could someone advise me
Post by: - Fezcat - on September 19, 2011, 08:18:57 AM
Quote from: B.Martin;789129(http://2.bp.blogspot.com/_RS4fX1o3YCA/Sa3ej5svtkI/AAAAAAAAAJg/sjYyA1cpHU4/S220/decal_i_love_re_b.jpg)

QFAT! :3gears-rh

Lacey - They\'re all FC\'s? (http://www.sxoc.com/vbb/images/smilies/wack.gif)
Title: hello..everyone,please could someone advise me
Post by: Lacey on September 19, 2011, 08:27:17 AM
Apparently so! :Laugh

Backfires are normal, happens a lot even on the EGI\'s, mine spits all the time when letting off, every once in a while you get an ear splitting CRACK and a nice bright light :Laugh
Title: hello..everyone,please could someone advise me
Post by: B.Martin on September 19, 2011, 08:27:57 AM
Quote from: - Fezcat -;789134Lacey - They\'re all FC\'s? (http://www.sxoc.com/vbb/images/smilies/wack.gif)

There is no problem there :rolleyes:
Title: hello..everyone,please could someone advise me
Post by: - Fezcat - on September 19, 2011, 08:29:57 AM
Quote from: B.Martin;789142There is no problem there :rolleyes:

Personal opinion darling ;) If I wanted a series 1 MR2 thats what id buy, not its fatter lookalike :D (http://www.sxoc.com/vbb/images/smilies/wack.gif)
Title: hello..everyone,please could someone advise me
Post by: B.Martin on September 19, 2011, 08:34:57 AM
Oooooooh handbags! It is personal preference, i think the mr2 looks pants comapred to the FC :Giggle
Title: hello..everyone,please could someone advise me
Post by: Lacey on September 19, 2011, 08:52:47 AM
Quote from: B.Martin;789145Oooooooh handbags! It is personal preference, i think the mr2 looks pants comapred to the FC :Giggle

Likewise! The similar Porsche isn\'t so bad, but the MR2 is just non-comparable. Plus, the FC is a rotary, which automatically makes it superior to the porsche and the MR2. :driving
Title: hello..everyone,please could someone advise me
Post by: B.Martin on September 19, 2011, 09:18:29 AM
You Lacey are 100% correct.
Title: hello..everyone,please could someone advise me
Post by: Lacey on September 19, 2011, 09:24:53 AM
Quote from: B.Martin;789157You Lacey are 100% correct.

Holy crap, I\'m right for a change? Alert the press! :rollin
Title: hello..everyone,please could someone advise me
Post by: - Fezcat - on September 19, 2011, 09:28:52 AM
ummm.....Nah :D
Title: hello..everyone,please could someone advise me
Post by: dthebuk on September 19, 2011, 01:31:48 PM
You say hard to start when warm. Is this like when you fill it up with petrol its hard to start after? Or if you leave it for like half an hour its hard to start? or both?

if it is low compression I wouldn\'t worry too much, EGi\'s can run for ages with low compression before going bang
Title: hello..everyone,please could someone advise me
Post by: m1tch on September 19, 2011, 03:39:52 PM
The EGI engines never really go \'bang\' they just have less and less power, turboed rotaries on the other hand make expensive noises, usually just after its put out loads of noise from the exhaust :D
Title: hello..everyone,please could someone advise me
Post by: m1tch on September 19, 2011, 04:15:48 PM
Yes....flames...

(http://img100.imageshack.us/img100/2527/burntfcll6.jpg)
Title: hello..everyone,please could someone advise me
Post by: Skifledanabit on September 21, 2011, 01:17:01 AM
WHOAAA!!!! Ah, i\'m glad to see that all the pops, bangs over fuelling etc aren\'t just mine.
Title: hello..everyone,please could someone advise me
Post by: B.Martin on September 21, 2011, 07:33:52 AM
Nope, the EGI\'s seem to be worse for the bangs and flames than the turbo\'s perhaps as the turbocharged cars burn the fuel quicker? Its nothing to worry about, plus its generally viewed as cool (by me).
Title: hello..everyone,please could someone advise me
Post by: Brett on September 21, 2011, 07:42:21 AM
Back on topic....

How many miles has it done?
Any history of a rebuild?
Title: hello..everyone,please could someone advise me
Post by: Lacey on September 21, 2011, 07:52:45 AM
Quote from: Brett;789628Back on topic....

How many miles has it done?
Any history of a rebuild?

Okay, back on topic.

My EGI is on 93k miles with no indication of a rebuild in it\'s history.

Chuff test shows even compression, starts fine usually when cold sometimes needs some help with the fuse, doesn\'t like starting hot very much either.

Has the same backfiring symptoms as yours, as do two other EGI\'s (Kamatari\'s and Skifles\')

EGI\'s do, by nature, run excessively rich in comparison to the Turbo-II, Brett can probably tell you why, as I have no idea. Running rich not only means they use plenty of fuel (I personally tend to expect an average of 16mpg from mine) but running rich means it WILL backfire an awful lod, especially letting off under load, and as Ben said, will likely spit flames at high RPM gear changes.

If you\'re worried about a misfire, try the following.

Check all your plugs - are they dirty? Do they spark? Do they need replacing?

Check your HT leads - are they brittle? Worn? Are they carrying current to the plugs?

Spark plugs wear with age and if you don\'t know how long they\'ve been in the car, it might be an idea to change them anyway to eliminate the plugs from the equation as a possible cause of the problem (that\'s what I did at least, and would recommend doing if you don\'t know the state or age of the current plugs)

People often argue in the EGI that either NGK9\'s or NGK10\'s are better, it all depends on who you ask and what you feel like putting in it, I use 9\'s, others have 10\'s.
Title: hello..everyone,please could someone advise me
Post by: Skifledanabit on September 21, 2011, 10:26:11 AM
I\'m guessing EGi\'s run rich simply because it\'s a direct route from the housing out the exhaust, whereas the turbo model\'s exhaust has to go back through the turbo, therefore the excess fuel gets dissipated by the turbo, therefore no pops and bangs.
Title: hello..everyone,please could someone advise me
Post by: Brett on September 21, 2011, 11:52:34 AM
The hot starting issue could be knackered injectors and a worn engine, hence asking about cars history :)