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Index > Engine/Drivetrain > Thread: Starting trouble
Thread: Starting trouble
sparky


Redlining
Posts: 299
posted March 24, 2004 07:59 PM

Starting trouble

I've been having some trouble starting my repu. When the engine is cold after it starts it runs rough until I get the revs to around 3,000. After that it runs pretty smooth. I think I have too much carbon on the apex seals. What do you guy's think? I remember hearing about power foam. Is this the best way to clean out carbon? If so where do I get it. Also, are there any other ways to clean it out. Thanks, Scott.
____________
'77 REPU
Stock 6-port
T-2 tranny
Weber IDA 48
Alum Flywheel
3rd gen Torsen in rear end.
DLDFIS ignition

       
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Jeff20B


Moderator
Posts: 661
posted March 25, 2004 12:02 AM

Water cleans carbon.
____________
'74 REPU
'76 Cosmo
'77 MG Midget 13B
'81 RX-7

       
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Klaus43


Rotorhead
Posts: 1259
posted March 25, 2004 10:51 AM

Your Local Amsoil Dealer

Or, factory direct from 1-800-956-5695 , 7 am to 5 pm Central Time, M-F.

Amsoil Inc.
2206 Winter Street
Superior, WI., 54880

If you're anywhere near this part of Oregon, call Lyle Hruda at (541) 688-1104, and tell him I sent you! He's an autocrosser, and might have discounts to offer fellow racers...

Just remember to do ALL tuneup stuff first, and change the oil, too... then, don yer respirator, 'cause it's gonna get NASTY! ...and whatever you do, once you fire 'er up after the foam, don't shut 'er down--go driving, the longer and more 'spirited', the better! :)

       
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sparky


Redlining
Posts: 299
posted March 25, 2004 03:50 PM

Thanks. I remember someone said use water. Rev the engine and pour water down the carb and keep it running. Is this what you are referring to? Hey Klause, thanks for the info. I'll give Lyle a call. I used hang out with him when he lived in WA.
____________
'77 REPU
Stock 6-port
T-2 tranny
Weber IDA 48
Alum Flywheel
3rd gen Torsen in rear end.
DLDFIS ignition

       
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Klaus43


Rotorhead
Posts: 1259
posted March 26, 2004 09:53 AM

Wow!

Small world... Now you've got me wondering if converting over to 'other' fuels will clean out the carbon as well...

       
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Jeff20B


Moderator
Posts: 661
posted March 26, 2004 10:39 AM

I once did the water down the carb trick on my '69 Corona over 10 years ago, but I've never done it on a rotary. I guess I've never had a carbon problem.
____________
'74 REPU
'76 Cosmo
'77 MG Midget 13B
'81 RX-7

       
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kansei


Redlining
Wankelized
Posts: 423
posted April 04, 2004 08:47 AM

Other possibilities...

Remember, it could be a host of other problems (if it only runs rough during the warmup cycle, then smooth afterwards). Check the choke system to make sure it is working correctly. Also, check the secondary air bleed screw for obstruction/clogging. You could also have a torn diaphragm in your accelerator pump, or something as simple as mismetered fuel due to improper float settings.

Not at all saying anyone is on the wrong track, just some experience from several RX-7s I've worked on in the past that turned out to have nothing wrong internally, all problems were in the carbs.
____________
Neal A.E. Swigert
Greenville, Michigan
1974 REPU Resto Project
1976 808 Wagon
1977 Cosmo
1978 Savanna RX-7 GT
1980 Leather Sport RX-7
1980 Petty Targa RX-7 #11
1985 GSL-SE RX-7
1988 RX-7 10th Ann
1993 RX-7 VR Touring




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sparky


Redlining
Posts: 299
posted April 04, 2004 10:43 AM

Thanks for the reply. I tried the water down the carb thing and still have the problem. I'll recheck the carb floats. I'm beginning to wonder if my apex seal springs have been overheated? Any thoughts? Sparky.
____________
'77 REPU
Stock 6-port
T-2 tranny
Weber IDA 48
Alum Flywheel
3rd gen Torsen in rear end.
DLDFIS ignition

       
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