timmya2

ok well im having starting problems when the car is warm.. and i dunno whats causing it..

like in the morings she starts up just fine..

but after i drive her then leave it for like 2 hours ... she wont start properly..

like its already warm and the choke goes in automatically so it means it warm already.. even if i pull it out.. it goes back in.. so this is how i know the car is warm.. and this is when it happens


i have to like press the gas pedal while turning the key as hard as i can.. its like shes strugglin... and after i get her started.. its like shes struggeling to get the motor running.. like slow bump bump bump.. then i press the gas pedal and make it go up to 1k rpm and leave it for a bit.. then she remians started.. i dont get it..

if leave it for a very long time.. like 5 houts or more.. or overnight... she starts up fine


please help..

oh another mention.. if i keep trying to start her.. while at this stage.. (warm and not wanting to start) she wont start at all!! after u try it like 5 times..

like no cranks no noting.. no voltage going in..


but after like a few more hours.. she goes back to normal.. it happened to me twice already

i need help guys.. someone told me it could be the carb.. if it is.. i will be replaceing it anyways with a 48 IDA weber

thanx heaps guys for your help

anthrax

Well i am no expert, but my first guess is she is flooding when you turn her off.

Hopefuly RX7Carl or some other card XP will chime in with a possible explaination, because I don't have one.

The starter Drains the battery pritty quick, so my guess is that is what is happening. The starter is killing the battery.

Do you have a properly sized battery in the car? Around here they try to get away with installing garden tractor bateries (sota like a Miata battery). If your battery is too small it may not be able to suply the starter with the energy it needs to start the rotory engin.

Any way these are just some thoughts.

Good luck

anthrax

1stand3rd

You're not losing coolant are you? Is there alot of smoke at startup?

Tom

Starting problems when hot are common with Rx-7's. There arelots of threads concerning this. If your engine is stock, your hot start assist may be malfunctioning in which simply opens the throttle a wee bit when you crank her. Make sure you lightly press on the eccel. during hot start-up. Don'tpump!...See this thread for other info.

https://www.rx7club.com/forum/showth...t+start+assist

timmya2

yeh the battery is high quality very expensive battery

12abridgeport

I've had a similar thing happen to me when i was loosing compression in the motor. Also another thing could be timing or flooding like mentioned above. Try giving it a little bit less fuel on start up.

I'm using carbon apex seals now and discovered that they are very sensitive to a/f ratio, especially on start ups, spark plugs get flooded very easily.

Rx7carl

first place Id look. Second is make sure your not boiling the fuel out of the bowls when its sitting after shutdown.

Mr_Rx7_Au

Mate its a simple case of flooding. Rotaries dont like to be re-started straight away after being turned off for like 30mins - 1 hour for shopping etc.

Just dont pump the accel..lightly tap it until it cranks..can take a few more seconds. when it turns ride the accel a bit until idling is smooth.... ie make sure it doesnt stall.

Pretty common issue/fact.

What battery you got in anycase? 6 plate? 8 plate? how many volts ya getting when ya put the key to ON.... 12v?

Darren (adelaide)

pillage6

My car is hard to start when warm, takes about 4-5 seconds for it to catch.

I just figured that is how rotaries are.

rotaryrevial

idk if u know your are supposed to but i belive that you have to pump the gas twice b4 starting. idk if thats it just trying to help

timmya2

yeh i think you're right..

as i said earlier...after mine stalls like 5 times of trying to start her.. whilst car is warm.. she wont crank at all.. no voltage going through.. then i wait a bit like 10 - 15 mins.. then she cranks again.. it cant be the battery because the cranking is nice and strong..


and as for the voltage reading.. the needle is right in the middle on the guage... i think its 4.. i cant remember wat the middle number is..

mar3

iTrader: (8)

Change your plugs and wires

REVHED

It's flooding.

As for the intermittent starting it's usually a sign the starter's on it's way out. That's assuming everything else is up to scratch like the battery, battery leads, connections, ground etc.

FB II

dude, i had the EXACT same problem. your carb needs a rebuild. gaskets are leaking fuel when you shut it off. here's a way to tell. when you finish a drive, before you shut the car off, pull the carb filter cover off. then shut the car off and run back to look down the carb. i BET you'll see gas seeping out and flooding up. get a rebuild. carb rebuild that is, not motor.

timmya2

yeh i hope its the carb coz im putting my new weber in there

mar3

iTrader: (8)

It's not getting enough spark to overcome the inherent rich jetting of the Nikki...

Wankelguy

I had the same problem until I reset the float levels and changed the needle and seats in my carb yesterday. If I shut it off and then restarted it within a few minutes, no problem, just twitch the key without touching the gas and it'd start right up. But if I waited say, 20 minutes or so, the sucker was flooded. It would start up in the morning just fine. It seems to be working fine now.
I'm gonna get some Grose-jets eventually to replace the sucky needle and seat type fuel inlets.