bugman1973

well i was driving down the road and all the sudden i lost power. the car wouldnt do anymore than 20-30 it sucked. when i got back to the house i looked at the vacumm lines and found one that was not hooked up i think that was the problem but i guess ill find out for sure later today when i go to work.

Kentetsu

Well, did that fix it? If not, then confirm that you still have spark on the leading plugs.

cdrad51

20 bux says that didn't.

bugman1973

nope its not fixed yet. i had just gotten done drove it to work. it was fine on the way to work and back. i got home and parked it turned it off opened the hood realized i didnt have my air filter in it all day? so i put it in and was going to hang out with my friend got to about the same spot and it slowed agian so i drove it back home and parked it. and now im here so. i dont know what to do im kind of new to rotarys

cdrad51

New to rotaries and to forums huh. How about use of the search pedal.

bugman1973

i think i found out what it is i was checking my spark plug wires guess what. the lead 2 wire is loose on the distributor im thinking that that is my problem ill fix it to make sure and go driving it around to figure it out

bugman1973

nope didnt work it seems when the engine is hot and you turn it off it doesnt get enough fuel or spark or something

PT Ray

That's too easy of a fix, we must think of the worst thing it could be and go from there. Alright, I am being mean, but will admit of having let myself fall victim to the same. O.K., I quoted you because I believe you have a good suggestion and want a piece of the credit if this turns out to be the issue.

Kentetsu

Are you saying that when its hot, it won't start? If so, then check your timing...

bugman1973

no i never said it wouldnt start i said it runs fine when i start it up but if i turn it off to go do something come back turn it on it kind of gets bogged down feeling i can half pedal it and i moves quicker than when it is all the way to the floor.

Kentetsu

Ah, now I get it. When its cold, the choke is on which will make the mixture richer. When warm, the choke shuts off and you lose that extra fuel in the mixture. What is probably happening at that point (assuming that you have a carb'd version) is that you aren't getting enough fuel to go with the air that is being drawn in. I'll bet that if you pull the choke out when its warm, and hold it there, the performance improves a bit. Right? Assuming that I am on the right track so far, what you're going to be looking at is clogged jets in the carb. I went through this very same ordeal a couple of years back. Let me know if this sounds correct so far...

bugman1973

im thinking its the carb im pretty sure its never been messed with. what im thinking about doing is buying a holly carb kit hooking up a turbo timer to a fan and setting it for like 10 mins. to help cool the engine and also getting a pump to return all the fuel to the tank. ive been talking to some people and they say thats probally the best thing to do and then go from there and if it gets worse to send it to the local first gen. rx-7 guru to see if he can figure it out whats wrong i sure hope i dont have any bad seals. man would that suck. but thats what im going to do after i sell the old 73 bug i have sitting out back and hopefully that will fix all my problems.

but we'll see what happens ill keep you'll enformed hopefully i get this thing done soon though. i kind of think i just need to putt putt around for a bit then only get in to the pedal when i need too.

loki1970

I had the same prob when I first got mine, I replaced the feul filter and now it runs like a bat out of hell.

Kentetsu

bugman- I don't understand most of what you just wrote... A fan to help cool it down? I might be mistaken, but it sounds like you are trying to accommodate the problem rather than fixing it. A carb rebuild kit costs like 30 bucks, why not just rebuild it and clean it up? Or, you can just remove the sight glass windows and extract the jets through there to clean them (screw driver to loosen them, and a wooden toothpick to thread them out and remove them). And what's that about a Holley carb kit? Do you have a Holley carb? Sorry, but I'm a little confused...

cdrad51

How about doing a fuel volume and pressure test instead of guessing whether or not you're getting enough fuel.

bugman1973

ok ive talked to a few of my experts and they have been telling me that its either my cats or my fuel pump so i guess im going to be doing some work to figure it out

trochoid

iTrader: (6)

The cooling fan and timer is a waste of money, time and fuel. The only reason to go with the Holley is if you want to upgrade for performance and if you still have the stock exhaust, it's a waste.

The carb may be leaking after shut down due to the solenoid being bad or not seating due to crud. Rebuild the carb, check the fuel filter and pump and check the cats.

Hot start issues are usually carb or compression related. By the time you buy the RB Holley setup, the full RB exhaust system, a new fuel pump, filter and regulator along with replacing all the soft fuel lines, you could drop nearly 2k in parts. If you rebuild the carb, replace the fuel pump and filter, you will spend a little over 100 bucks on parts. Which option makes more sense?

Mr rx-7 tt

iTrader: (5)

dp

Mr rx-7 tt

iTrader: (5)

Bingo!
Change the fuel filter first! It's underneath the car behind the drivers seat. You can get one from an auto parts store for under five dollars.

bugman1973

thank you guys i wish youll would have posted to begain with then i wouldnt be thinking these things needed to be done when i can just do something simple and just sup up my car later. but at the end of the month i am getting a header back exhust system to free up some back pressure and not have to worry about cats ever again

bugman1973

ok im almost 100% sure that i have a bad fuel pump i have ordered it and i will have it by thursday. so in the mean time i also picked a filter to see if that makes it any better but the old one is probally still good so we'll see whats going on. still planning the cat less exhaust though.

cdrad51

Good idea. The fuel pump, the filter and the catless exhaust system.