markeddief

What could be wrong? While driving my RX3-SP on Fwy in 5th gear at a constant speed of about 75MPH I noticed a slight to moderate loss of power. (I had to step on accelerator more to maintain my speed. Car could also increase speed with more throttle input.) I continued on Fwy for about 100 miles (trip was from Bakersfield to Modesto) & exited. Car ran extremely ruff upon exiting (missing/back firing/ no power). Here's the kicker: Car runs fine until tacometer hits about 1,200 RPM then I have to shift to next gear to keep tach under 1,200 RPM or car has the problems again. Once I shift to next gear I can SLOWLY increase speed until I go through all the gears (if I keep it under 1,200 RPM). When I hit 5th gear car then accelerates smoothly and almost normally. I can only exceed 1,200 RPM in 5th otherwise car almost stalls out, boggs down and has multiple backfires. Engine is all original, points, thermal reactor and all but has two Capacitive Discharge Ignitions from Fedco (yeah its straight up old school). Anybody ever have this happen and know what this could be????? Thanks.

markeddief

One more thing. On same trip lights quit working on low beam before loss of power problems. Unknown if this is related or a separate issue. Thanks.

Siraniko

iTrader: (13)

Bring it back to fedco off rodeo drive for warranty. Didnt know they sold ignition. First, not sure if you still jave points dizzy but i would check thw gap and timing and fuel for blockage. Compression check is good also but if compression is bad, you have to keep rpm high to keep it running

markeddief

Thanks. I'll check the timing and fuel. The thing that's throwing me is that it runs fine in 5th gear. The other gears wont let me exceed 1,250 RPM. This is the one I bought from Arrnel. Haven't changed a thing on the engine. Ill also check the points. If u think of anything else please let me know.

And I thought someone would remember Fedco on La Cienega and Rodeo Rd.

DriveFast7

iTrader: (1)

It could be a marginal fuel pump.

markeddief

Thanks guys. I figured out the problem today. The Mark Ten B capacitive discharge ignitions I have finally gave out after 30 years! Actually the boxes still work, the control unit is what went out. The unit has a tachometer & control lead wire that apparently tells the boxes how.much spark to give based on load. Once my racy hit 1250 the spark wasn't sufficient to power the distributor. I disconnected this control wire and now the car runs fine. Granted my acceleration is not as quick now but at least I'm rolling. Hope this helps if anyone has the same problem. Time for a new C.D.I.....

markeddief

"Racy" should be "Tach". These darn "smart" phones.

Siraniko

iTrader: (13)

Ur cdi died just like fedco lol

markeddief

Yeah, only my CDI actually outlasted FEDCO.

ORANGESP

iTrader: (1)

hey Mark.... Long time, thought I'd let you know I'm a selling my Rx3-SP on ebay, cheap.... in case you know of anyone

markeddief

The red and white one? I just looked at it today. I'm actually debating letting mine go to. I know I'll regret it though if I do.

ORANGESP

iTrader: (1)

Yea me too.... I blew up an engine in my cessna, and have an opportunity to pick up a 200hp motor for a steal.... So everything is up for sale... Selling two bikes and my r100 and camaro too...