Morning start issues

Regie · Postby **Regie** » Sun Mar 04, 2012 10:13 pm

If its hard to start first thing....I'd check the battery

My nb was hard to start in the morning....chucked the battery tester on it and it was on its way out....

pap11y · Postby **pap11y** » Tue Mar 06, 2012 3:58 pm

Regie wrote:If its hard to start first thing....I'd check the battery

My nb was hard to start in the morning....chucked the battery tester on it and it was on its way out....

I have already acquired a pump and am replacing this and the filter.

I think the logic behind it is sound (I am sure some may disagree).

If no go I'll look at the sensor.

As far as the battery, I don't think so but its good to consider all possibilities.

I'll install the pump tonight and see how that goes...

pap11y · Postby **pap11y** » Tue Mar 20, 2012 1:17 pm

ralt wrote:Hi.
Your problem may be a fuel pump which is dying. To eliminate it from the problem in the morning turn the ignition on for 10 seconds switch it off and then start it. If it fires immediately your fuel pump is dying. If it is the same and will not start you have eliminated the pump as a problem.

Thanks for your advice on this. Was definitely an issue with the pump. The hose from the pump to the metal line was split right up the seam.

I am surprised the car ran so well considering.

Car is great since change. It is idling a little more consistently and is able to handle much lower revs in gears without getting unhappy.

Thanks everyone for your advice.

Ralt... You da man

93_Clubman · Postby **93_Clubman** » Tue Mar 20, 2012 5:19 pm

pap11y wrote:The hose from the pump to the metal line was split right up the seam.

pap11y · Postby **pap11y** » Tue Mar 27, 2012 5:24 pm

93_Clubman wrote:
pap11y wrote:The hose from the pump to the metal line was split right up the seam.

Agreed

RJ45 · Postby **RJ45** » Tue Mar 27, 2012 10:57 pm

Someone who definitely knew more about cars than me told me the following a few years back:

Fuel pumps built into the bottom of the tank use the petrol in the tank as a heatsink to absorb the heat it generates.
So the pump will run hotter when the tank is almost empty and doing so frequently will lead to a shorter life for your pump.
So, avoid running the car to empty frequently.

Can any knowledgeable people confirm the the above advice I was given is correct/worthwhile following?

Anyways, I've always tried not to run too low out of concern for the injectors.

93_Clubman · Postby **93_Clubman** » Wed Mar 28, 2012 12:37 pm

RJ45 wrote:Can any knowledgeable people confirm the the above advice I was given is correct/worthwhile following?

There's an MX5 fuel pump wiring issue called 'black wire' on Miata.net. Speculation has been that it's caused by running low fuel levels or not changing the fuel filter frequently enough, making the pump run hotter. I encountered it on an NA6 last year: viewtopic.php?f=55&t=46425