Hard starting below quarter tank fuel
27-Aug-2003, 11:17 AM
#23
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Originally posted by bbarbulo
Perhaps Civics were undererquipped as economy cars with a smallish pump,
Perhaps Civics were undererquipped as economy cars with a smallish pump,
now im not saying an upgraded pump will give any gains to my car, but the whole artical was leaning towards the wearkness of the pumps.. leading me to beleive they might get tired quicker, and not hold perssure....
I guess when the fuel tank is full the weight or volume of the fuel in the tank holds the pressure in the lines... and when the tank is near empty its more the pumps seals/valves (whatever a civic pump uses) to do the job... or most other pumps are stroner at low fuel and prime so quick you dont notice the loss of fuel pressure..??
27-Aug-2003, 11:28 AM
#24
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Originally posted by bbarbulo
5th gen OBD1 - no CEL for gas cap emissions.
5th gen OBD1 - no CEL for gas cap emissions.
I have had this problem in several 92-95 chassis cars. The procedure outlined by Mark seems to work sometimes.
Unless you need to fork over $$ for a new pump live with it. A good FP guage will tell you whats happening and when. Then decide for yourself.
Are we talking about cold and warm starts?
19-Jan-2005, 01:29 PM
#26
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Same problem goes with me, I was planning on doing a fuel pump change as well. I also have a b16 Swap, which is why I thought I might be having this problem. Is it necessary to change the fuel pump after a swap? I swapped from a stock 99EX engine to a b16A2
19-Jan-2005, 01:34 PM
#27
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wow old thread lol. I put in a new pump a year later and all my problems went away.
And yah a highflow pump would be ideal for you. You will get optimal performance out of the fuel system...
For the mean time when you start the car below a quarter tank, prime the system a few times before starting... Turn the key on, but dont engage the starter, you will hear the fuel pump prime, do that 2 or 3 times and the engine will fire up like a champ.
And yah a highflow pump would be ideal for you. You will get optimal performance out of the fuel system...
For the mean time when you start the car below a quarter tank, prime the system a few times before starting... Turn the key on, but dont engage the starter, you will hear the fuel pump prime, do that 2 or 3 times and the engine will fire up like a champ.
19-Jan-2005, 02:06 PM
#28
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Location: Barrie, Ontario Canada
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Does anyone know which pump I would use in a 88-91 Civic all the listing I can find are for 92 or newer. I would like to keep it in the tank if at all possible. And yes i ahve done a search.
20-Jan-2005, 08:59 AM
#30
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Posts: 909
Originally posted by MY SiR
Woah,woah
Before changing your fuel pump, on 6th Gen Civics, this is a very common thing. There is nothing wrong with the car. From how you describe it, it seems like it takes just a little longer to start when the tank is low. This happens because as the tank gets lower in fuel, the remaining pressure, when the car is turned off, also drops.
What can you do? Well, Honda recommends (for all Hondas), when starting, to turn the key to the "On" position (i.e. no cranking), wait a few seconds until some lights on the dash go off then crank it. This allows the fuel pump to build pressure in the fuel system. Also, it is good for the ECU/PCM for it to initialize. It seems like a pain but once you get used to it, it's like second nature. One think you can do while you wait for the lights to go out is to fasten your seat belts....
What bbarbulo said about "generally a sign of a weak pump" is true but not in this case. The stress should be in "generally". If you change your pump, I don't think there will be any difference. I am not sure if you believe me but generally bbarbulo trusts me. I have really good sources.
At least you can try the waiting before cranking thing. It won't cost you any money...
Mark
Woah,woah
Before changing your fuel pump, on 6th Gen Civics, this is a very common thing. There is nothing wrong with the car. From how you describe it, it seems like it takes just a little longer to start when the tank is low. This happens because as the tank gets lower in fuel, the remaining pressure, when the car is turned off, also drops.
What can you do? Well, Honda recommends (for all Hondas), when starting, to turn the key to the "On" position (i.e. no cranking), wait a few seconds until some lights on the dash go off then crank it. This allows the fuel pump to build pressure in the fuel system. Also, it is good for the ECU/PCM for it to initialize. It seems like a pain but once you get used to it, it's like second nature. One think you can do while you wait for the lights to go out is to fasten your seat belts....
What bbarbulo said about "generally a sign of a weak pump" is true but not in this case. The stress should be in "generally". If you change your pump, I don't think there will be any difference. I am not sure if you believe me but generally bbarbulo trusts me. I have really good sources.
At least you can try the waiting before cranking thing. It won't cost you any money...
Mark
My car (00 Si) does the exact same thing when the fuel is low. Just turn the car on and let the fuel pump build pressure in the line, then crank it and it will start no problem.
22-Jan-2005, 08:24 PM
#32
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Join Date: Apr 2004
Posts: 767
problem
Try putting some gas antifreeze bottle in the gas tank. It might help because inside your tank there might be water inside which leads to freeze. If it cranks slow it could be your battery, but u say it only does that when your tank goes low, so i assume is not your battery.
For those that wants to know about the fuel pump with a engine swap. Yes u are supposed to get a high flow fuel pump when u have a upgrade engine because your car gives more gas and more power. It isn't fast enough to pump gas into the engine if u have a upgrade engine. Enough info given.
For those that wants to know about the fuel pump with a engine swap. Yes u are supposed to get a high flow fuel pump when u have a upgrade engine because your car gives more gas and more power. It isn't fast enough to pump gas into the engine if u have a upgrade engine. Enough info given.
22-Jan-2005, 10:19 PM
#35
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Originally posted by kane2k
My car (00 Si) does the exact same thing when the fuel is low. Just turn the car on and let the fuel pump build pressure in the line, then crank it and it will start no problem.
My car (00 Si) does the exact same thing when the fuel is low. Just turn the car on and let the fuel pump build pressure in the line, then crank it and it will start no problem.
22-Jan-2005, 10:23 PM
#36
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Originally posted by bbarbulo
looks like we can chalk up another one for bbarbulo j/k
looks like we can chalk up another one for bbarbulo
j/k
my tank can have the fuel light on for 30 km, then sit for 3 days and it fires right up without waiting for the full prime!
chalk it up!
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