Subaru impreza 1995 HX

[Ponygurl]

Hard to start sometimes, have to have foot flat and keep winding key on.

Blows black smoke when does finally start.

Check engine light and fans click on few minutes after starting in mornings, seems to idle high as well, then after a few minutes the check engine and fans click off again and car runs normal again.

[Ponygurl]

Hard to start sometimes, have to have foot flat and keep winding key on.

Blows black smoke when does finally start.

Check engine light and fans click on few minutes after starting in mornings, seems to idle high as well, then after a few minutes the check engine and fans click off again and car runs normal again. If anyone has any idea what could be causing this problem any advice would be much appreciated.

[1 Lucky Texan]

seems a little like a leaking injector. Coupla things to try. easiest is, next morning/time when you feel the car would fail, cycle the key to ON (not START) and wit 8 seconds, then back to OFF, then back to ON/wait * seconds, then repeat 2-3 more times. Each time, you should hear the faint sound of the fuel pump pressurizing the rails. THEN start. You may still need your foot on the floor. But, if it starts more quickly, it means you are losing fuel pressure when the cars sits for a period.

 

Another test would be to pull the spark plugs in the morning and look for one wet with fuel. That could be the cyl, with a leaky injector.

[Ponygurl]

OK thanks I will give this a try, and see how i get on. But if leaky injector would that make fans click on at the same time as engine light comes on? It starts first pop in morning but about 5mins the check engine comes on and fans, if I was to turn it off while check engine light is on I would then have trouble starting it. The engine light will click off after driving for about 5mins.

[1 Lucky Texan]

weird - are there 2 green connectors under the dash that someone has connected? those should normally be DIS-connected as they are used for testing purposes only. They will make fans cycle and relays click all over the car.

 

Fan control relies on several things to work correctly - Engine Temp sensor, ecu, relays and of course, power and ground connections and intact wiring.

[Ponygurl]

Ok thank I will check an make sure those connections aren't connecting, I'm pretty sure they're not though. I checked plugs and none of them were wet, so that was good. I've pretty much done everything I can think of except temp censor, but I wouldn't think that would make it hard to start though. The guy that did my wof said it could be the part of the throttle body where you can rev it manually a part of that doesn't seem to be closing down as far as it should, I'm guessing maybe that's the choke thingy, but as i really have no idea it's hard to know what he really meant an if that could cause the problems I'm having. I'm defiantly not having much luck with solving the problem that's for sure.

[1 Lucky Texan]

Ok thank I will check an make sure those connections aren't connecting, I'm pretty sure they're not though. I checked plugs and none of them were wet, so that was good. I've pretty much done everything I can think of except temp censor, but I wouldn't think that would make it hard to start though. The guy that did my wof said it could be the part of the throttle body where you can rev it manually a part of that doesn't seem to be closing down as far as it should, I'm guessing maybe that's the choke thingy, but as i really have no idea it's hard to know what he really meant an if that could cause the problems I'm having. I'm defiantly not having much luck with solving the problem that's for sure.

 

Sounds like he could be suspicious of deposits in the throttle body - worth cleaning it i suppose.

 

If anyone has tried to adjust the idle or throttle settings, that could be a problem. There's a strict procedure for that.