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RX-7 1st Gen Specific (1979-85) RX-7 1979-85 Discussion including performance modifications and technical support sections |
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#1 |
Rotary Fan in Training
Join Date: Dec 2012
Posts: 91
Rep Power: 13 ![]() |
distributer problem maby?
alright so i fixed the carb base plate and then discovered i had 4 fouled spark plugs so i replaced them. car cranked right up and idled but idle was high let the car run for 5 to 10 minutes then had someone come over that was going to help with my adjustments on the carb. tried to crank it back up and discovered i had no spark comeing off my coils so im not sure if it could be wiring or my distributer... havent been able to get it cranked again but ive probally fouled the plugs again. i had replaced the coils with sum off a older truck and im recently working on swapping those out with factory coils. theres a brand new cap and rotor so those are only things i can think of. any experience on these?
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#2 |
Respecognize!
Join Date: Jul 2008
Location: Δx = ħ/2Δp
Posts: 3,190
Rep Power: 21 ![]() |
not trailing OR leading? is there power to the ignitors? are the coils hooked up right? did you remember to put the rotor back in with the cap (i forgot once). Is the timing right?
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#3 |
Rotary Fan in Training
Join Date: Dec 2012
Posts: 91
Rep Power: 13 ![]() |
guy before me replaced the cap and rotor. and timing sounded good when i had the car cranked for that 10 minutes. he did have direct power running to the coils and i changed that. but i dont understand why it would crank, run, and idle but i turned it off and let it sit for a few minutes then no spark on leading or trailing coil.
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#4 | |
Professional Stick Poker
Join Date: Feb 2011
Location: Stafford, Ks.
Posts: 1,012
Rep Power: 16 ![]() |
Quote:
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1988 N/A SE 2+2, dead stock and staying that way. ![]() 1979 SA22C stock? Not so much. http://rotarycarclub.com/rotary_foru...ad.php?t=15585 |
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#5 |
RCC Contributor
Join Date: Mar 2008
Posts: 535
Rep Power: 18 ![]() |
See if the coils are getting power and if they are grounded .
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#6 |
Rotary Fan in Training
Join Date: Dec 2012
Posts: 91
Rep Power: 13 ![]() |
fuses where good. had to replace those fusible link once but that caused no power at all? is there one other than whats on the driverside strut tower? they are getting power ill have to check on the grounding cause i dont remember changing that and last i remember looking they where grounded to each other?
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#7 |
Respecognize!
Join Date: Jul 2008
Location: Δx = ħ/2Δp
Posts: 3,190
Rep Power: 21 ![]() |
so you have 12v at the coils confirmed? You also have voltage at the ignitors confirmed?
have you tried another dizzy? multimeter all the things!
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#8 | |
⊙⊙
Join Date: Dec 2009
Location: Great Falls
Posts: 1,258
Rep Power: 17 ![]() |
The thing is going to be flooded as all hell too. Deflood before trying again.
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#9 |
Waffles - hmmm good
Join Date: Aug 2008
Location: Huntersville, NC
Posts: 757
Rep Power: 0 ![]() |
How did you determine that your getting no spark at the coils after this shutdown?
Normally things don't mysteriously fail one minute (or 10 in this case) later. Note also to never, ever, shutdown a rotary after starting cold until it warms up. Otherwise you will be seriously flooded. If you have a strong ignition and battery you can restart a flooded rotary after about 4 cranks, otherwise deflood by removing plugs, cleaning, drying and crank with out plugs to clear out the chambers. Also note that when the plugs are flooded its like a short to ground for the spark so there won't be any indication of spark.
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1980 GS stockport, Fat Nikki, RB Dual Facetfuel pumps, Holley regulator, RB Street port exhaust, 2GDFIS, MR2 MK I electric fans, 2G strut bar, relayed fans, lights and fuel pump, LEDs Project Fat Nikki Budget 12A rebuild Video setup < $30.00 |
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#10 |
Rotary Fan in Training
Join Date: Dec 2012
Posts: 91
Rep Power: 13 ![]() |
well we pulled the wires coming off the ign coils and had my friend turn the key. no spark at all when i tried to arc it. and it did warm up idleing at what sounded like 4k for 10 minutes with reving and all. motor was certainly to hot to touch with my hand. weather permiting im gonna hook one of those multimeters to everything still waiting on my other stock ign coil to come in so limited on what all i can do at this moment.
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#11 |
Rotary Fan in Training
Join Date: Dec 2012
Posts: 91
Rep Power: 13 ![]() |
![]() heres the plugs when i took them out and sprayed sum starter fluid and cleaned them up. ![]() and heres setup on the ignition coils grounds are running into the wiring harness somewhere. |
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#12 |
Respecognize!
Join Date: Jul 2008
Location: Δx = ħ/2Δp
Posts: 3,190
Rep Power: 21 ![]() |
umm do you have the + on one coil going to the negative on another?
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#13 |
Rotary Fan in Training
Join Date: Dec 2012
Posts: 91
Rep Power: 13 ![]() |
![]() heres better picture actually its running into wiring harness the red wire is what i had to do cause the dude before me soddered the two harness wires together so i had to cut and add sum wire to make it work |
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#14 |
Respecognize!
Join Date: Jul 2008
Location: Δx = ħ/2Δp
Posts: 3,190
Rep Power: 21 ![]() |
well thats an issue. the B/W is 12v power which goes to the + of the coils.
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#15 | |
⊙⊙
Join Date: Dec 2009
Location: Great Falls
Posts: 1,258
Rep Power: 17 ![]() |
Yes 1 - 2 +
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