Engine just dies??
08-22-05, 11:59 PM
#1
Engine just dies??
Hey guys,
well today was the big day for me ... i've been working on this car for almost a year now, and I was able to have it somewhat running to atleast get me halfway through the block (yay) i know this doesn't sound much fun bit it means alot to me. THis is what happenening right now. The first run that i took it, it took a while to start up, so i looked around and figured out the fuel filter was looking pretty dirty so i might c hange it. So i did that and after it, it started up first try without hassle. After that, when driving it, it doesn't matter what gear i'm in, the engine will just stop and die on me??? Now for sure i knew that wasn't the fuel filter cause i just changed it. Next thing i do is take out the fuel hose and check if its pumping any gas into the engine ... sure enough nothing is coming out
but if i let it sit for long enough it will start back again?? what does this sound like to you guys? bad connection? bad fuel pump?
well today was the big day for me ... i've been working on this car for almost a year now, and I was able to have it somewhat running to atleast get me halfway through the block (yay) i know this doesn't sound much fun bit it means alot to me. THis is what happenening right now. The first run that i took it, it took a while to start up, so i looked around and figured out the fuel filter was looking pretty dirty so i might c hange it. So i did that and after it, it started up first try without hassle. After that, when driving it, it doesn't matter what gear i'm in, the engine will just stop and die on me??? Now for sure i knew that wasn't the fuel filter cause i just changed it. Next thing i do is take out the fuel hose and check if its pumping any gas into the engine ... sure enough nothing is coming out
but if i let it sit for long enough it will start back again?? what does this sound like to you guys? bad connection? bad fuel pump?
08-23-05, 07:50 AM
#3
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08-23-05, 12:41 PM
#8
alright so i found the connector and jumped a wire ... fuel pump, pumps out fuel but very low, the thing that i don't understand is that now the only way that i can really start it is by pouring some gas down the carb and then it will run somewhat fine but it still won't idle like that neither
08-23-05, 12:46 PM
#9
i should also add that when i try to crank it without pouring fuel down the carb ... if i look down at the jets, no fuel comes out ... but once its all started (by pouring fuel down the carb at first) fuel starts coming down the primaries
08-23-05, 01:08 PM
#13
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This sounds like either a weak pump, or a pump that has a lot of crud built up inside it. I recently encounted a crud filled pump, and I simply lowered the pump to where the outlet was at the bottom, and had someone turn on the key. When the pump started trying to run, I tapped on it with a screwdriver handle. You would not believe the amount of crud that came out. It would have easily plugged 2-3 filters.
I held a clear plastic bottle under the end of the fuel line, and let it run for a bit, it cleared out the crud fairly quick. After that, I could get fuel to the carb, and we drove the car about 5 miles home.
I held a clear plastic bottle under the end of the fuel line, and let it run for a bit, it cleared out the crud fairly quick. After that, I could get fuel to the carb, and we drove the car about 5 miles home.
08-23-05, 01:10 PM
#14
humm .... maybe i'll try doing that ... disconnection the fuel filer and try cleaning it out, i just called around for fuel pumps and i quoted 80 - 108 $CA ... what do you guys think about the prices ... they seem low compared to mazdatrix and what not
08-23-05, 03:03 PM
#15
alright so i went out and took out the pump and tried tapping it with a wrench to get stuff out but everything was fine. where does the fuel up connect? so that i can check voltage ... and what should it be anyways? I have noticed something though when i took it out on run#3 today, after i can start the car up, the car dies at almost the same distance. my assumption for that is that in order for me to end up the same place all the time i would have to be driving the same way (which i have been) and using the same amount of fuel. I would assume it would be the fuel thats only in the lines that are being used up then. And now that i actually somewhat regain my memory i think that run #1 and run#2 i was both in second gear in order for this to happen. The first time i think that it might of died cause the idle wasn't adjusted properly which is now "somewhat about 1,200rpm idle)
Any feedback at this moment would be great... anything else that i should look for, everything will be checked.
Thanks
Any feedback at this moment would be great... anything else that i should look for, everything will be checked.
Thanks
08-23-05, 03:27 PM
#16
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Got good flow at the pump? If there is good flow out of the pump, but not much at the carb, it likely has a clogged or bent/smashed fuel line. If the flow at the outlet of the pump is weak, then you either have a weak pump, or a restriction between the pump and tank. The pickup tube in the tank has a filter screen on it, and this can become clogged over time.
You really need to check the fuel flow and pressure at the carb, and at the pump. If it takes over a minute to fill a liter bottle, there is not enough volume of fuel for the car to run. If the pump is putting out enough volume, check it again at the carb.
As for pressure, I think these are low PSI pumps, around 3-5 PSI.
Low volume could be either a weak pump, or a restriction in the line.
Troubleshooting this can really make a person want to pull out all their hair, but it's best to check for a restricted line BEFORE spending a lot of money on a pump, then finding it was the line all along.
You really need to check the fuel flow and pressure at the carb, and at the pump. If it takes over a minute to fill a liter bottle, there is not enough volume of fuel for the car to run. If the pump is putting out enough volume, check it again at the carb.
As for pressure, I think these are low PSI pumps, around 3-5 PSI.
Low volume could be either a weak pump, or a restriction in the line.
Troubleshooting this can really make a person want to pull out all their hair, but it's best to check for a restricted line BEFORE spending a lot of money on a pump, then finding it was the line all along.
08-24-05, 12:41 AM
#17
alright ... i will do that ... but i know that when i disconnect the fuel hose from the carb i have no fue; coming out whatsoever sometimes ... i will have to check along with the pump to see if its giving the same results ... i'll do that tomorrow morning and post up the results
08-24-05, 12:50 AM
#18
Lives on the Forum
Check the rate of flow at the carb first. If its good there, then there's no reason to check it again at the pump. Also, will the car idle for any length of time? Also, there are small screens where the steel fuel lines bolt onto the carb, they could be clogged.
08-25-05, 12:22 AM
#20
alright i tried a little test for the fuel pump ... i took a jar and filled it with gas ... hooked a hose from there to the pump and another hose to return the fuel in the same jar ... fuel pump seems to be running fine, so after that i tried attaching the output to go to the carb and then engine started right up. So i guess that my problem is from the gas tank .. maybe it wasn't cleaned up good enough. I'll prob disconnect the thing tomorrow and clean it out ... what the best way to clean the insides ... last time i did it i just had a bit of gas in there shook the whole things and then drained everything from bolt that empties the gas tank. Also how do you get to the "strainer" thats in the gas tank?
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