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taking a long time to start by newfiejeff
Started on: 05-13-2015 11:37 AM
Replies: 9 (93 views)
Last post by: newfiejeff on 05-14-2015 08:54 AM
newfiejeff
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Report this Post05-13-2015 11:37 AM Click Here to See the Profile for newfiejeffClick Here to Email newfiejeffSend a Private Message to newfiejeffEdit/Delete MessageReply w/QuoteDirect Link to This Post
1986 2M4
Hi, what would cause a long time to start but when it starts it works fine.
- takes about 20 seconds or more to catch, will turn over fine, so bat not a problem
- then starts and works fine and runs perfect.

Latest changes, I changed a heater core and I replaced an O2 sensor, but used the car right after that and it was fine.
Drove it one night and it was fine then parked it and the next morning I didn't think it would start and then it did. I checked for spark and had loads, never checked for gas.

Any ideas?
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Gall757
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Report this Post05-13-2015 12:11 PM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
Yes.

Fieros have 2 ways to start the car (run the fuel pump). The usual way is the relay behind the driver next to the air intake. The second way is a switch in the oil pressure sender. If the relay circuit is not working, the car will slowly build oil pressure to activate the oil pressure switch, but it takes a lot longer to do this.

When you turn the key on, listen for a fuel pump noise in the center console.....it is probably not running.

[This message has been edited by Gall757 (edited 05-13-2015).]

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newfiejeff
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Report this Post05-13-2015 12:26 PM Click Here to See the Profile for newfiejeffClick Here to Email newfiejeffSend a Private Message to newfiejeffEdit/Delete MessageReply w/QuoteDirect Link to This Post
Yes I can hear it no problem.
The last time I tried starting the car before I actually turned it over I turned the key ahead to activate the pump, done that 3 times and the car started normal. I never had a chance to try it again.
I was thinking that it might be the fuel filter and thought about changing it but the car works too fine when it's going, so it's not that.

I may disconnect the fuel line from the filter and see if it pumps fuel right away. I should shoot out right away...corrrect?
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Gall757
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Report this Post05-13-2015 12:32 PM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by newfiejeff:

Yes I can hear it no problem.


well...dang! there goes my easy fix theory.... Yes, the fuel should shoot out.
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newfiejeff
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Report this Post05-13-2015 12:33 PM Click Here to See the Profile for newfiejeffClick Here to Email newfiejeffSend a Private Message to newfiejeffEdit/Delete MessageReply w/QuoteDirect Link to This Post
After the car is off for a while should the gas go back in the tank, technically making the lines empty?
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newfiejeff
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Report this Post05-13-2015 12:34 PM Click Here to See the Profile for newfiejeffClick Here to Email newfiejeffSend a Private Message to newfiejeffEdit/Delete MessageReply w/QuoteDirect Link to This Post

newfiejeff

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Member since Aug 2013
In the meantime maybe the relay never actually worked those couple of times and that is why it took a long time to start.
I will listen to pump on start up before I turn the car over.
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Gall757
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Report this Post05-13-2015 12:35 PM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
Yes....but pressure should drop slowly....over many minutes. If it drops in 30 seconds or so, there is a leak somewhere.
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newfiejeff
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Report this Post05-13-2015 12:36 PM Click Here to See the Profile for newfiejeffClick Here to Email newfiejeffSend a Private Message to newfiejeffEdit/Delete MessageReply w/QuoteDirect Link to This Post
Just asking, is there a check valve in the sytem anywhere? Is there any hoses or pipes in the tank or just the fuel pump?
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Gall757
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Report this Post05-13-2015 12:52 PM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by newfiejeff:

Just asking, is there a check valve in the sytem anywhere? Is there any hoses or pipes in the tank or just the fuel pump?


There is a regulator in the injector. It seems to be very reliable.
There is some plumbing in the tank. You could have a slow leak there.
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Report this Post05-14-2015 08:54 AM Click Here to See the Profile for newfiejeffClick Here to Email newfiejeffSend a Private Message to newfiejeffEdit/Delete MessageReply w/QuoteDirect Link to This Post
Well here is the latest.
Last night before I started the car I disconnected the gas line from the fuel filter and of course gas ran out of the filter and the line seemed full. I turned the key ahead 3 or 4 times and each time gas came out of the line. I hooked it back up and the car worked perfect after that.
I tried 15 or 20 times turning the key ahead and you can hear the pump click in. I drove the car and parked it for a bit and the car started fine after that, I tried the car this morning and all was fine.

I guess it's one of those Fiero mystery things.
I am going to change the filter again anyways and maybe there might have been a bit of dirt in the injector.

Thanks again for the replies.
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