Club Cobra

Club Cobra (http://www.clubcobra.com/forums/)
-   ALL COBRA TALK (http://www.clubcobra.com/forums/all-cobra-talk/)
-   -   Hard to start (http://www.clubcobra.com/forums/all-cobra-talk/141944-hard-start.html)

Steve Gallegos 01-18-2019 01:59 PM
Hard to start
 
I have a backdraft with a 351 stroked with edelbrock EFI. In the last month it has been very hard to start. turns over, but takes about 6 long cranks to start. The gas pressure gauge on the EFI is reading good pressure, I smell gas and a couple times it backfired and smoke came out of the throttle body. I have good charging on the battery. I thought maybe bad fuel filter.

Gaz64 01-18-2019 03:09 PM
Quote:
Originally Posted by Steve Gallegos (Post 1456940)
I have a backdraft with a 351 stroked with edelbrock EFI. In the last month it has been very hard to start. turns over, but takes about 6 long cranks to start. The gas pressure gauge on the EFI is reading good pressure, I smell gas and a couple times it backfired and smoke came out of the throttle body. I have good charging on the battery. I thought maybe bad fuel filter.
Sounds like it has fuel but lack of spark, or fouling plugs.

Can you remove the plugs for inspection please?

How old is the fuel?

Are you using a winter blend?

Gary

Steve Gallegos 01-18-2019 03:27 PM
The fuel in recent, I live in SoCal, The plugs haven't been checked. The car finally starts and runs fine, but it's the problem getting it started.

Gaz64 01-18-2019 04:15 PM
How often do you drive the car?

Do you drive it hard now and then to "blow the cobwebs out"?

Are you using a late Pro-Flo system?

Sorry for more questions Steve.

Gary

MKS427 01-18-2019 04:39 PM
One issue you may want to look into, is a coldstart issue due to EFI not being properly programmed. I had the same problem with my FiTech the first time I tried to start it in the cold. I would recommend calling Edelbrock and asking for an initial cold start setting.
Good luck

Steve Gallegos 01-18-2019 06:46 PM
I drive the car about once a week. When I take it out on Sunday, I get it up to about 80-90 on open road. It runs good after start up. I think I just need to get it retuned on the Dyno.

Steve Gallegos 01-18-2019 06:48 PM
The ProFlo system was put in in 2009. But the last dyno tune was 2013

Gaz64 01-18-2019 10:03 PM
I don't think you need a dyno run this time.

It needs time spent on the fueling AND air at cold start.

If opening the throttle helps, the IAC is not open far enough at cold start.

Or the fueling is possibly too rich.

Gary

joyridin' 01-19-2019 08:34 AM
I do not know what it uses as sensors, but most EFI set-ups have a temperature sensor that sits in the coolant by the water neck. These go bad a reasonable amount. Simply replacing that usually cheap sensor could fix the whole issue as it might not be reading correctly when the engine sits and is at room temperature.

CHANMADD 01-19-2019 12:01 PM
Usually timing.

Gaz64 01-19-2019 10:34 PM
Quote:
Originally Posted by OwenLi (Post 1456959)
Could another dyno run hurt the car at this point, Gary? I'm just curious.
This is a starting issue, 100 rpm to 1500 rpm, not a dyno tuning issue where they would be running from 1500 to 6000 plus.

If you are happy every where else, you could see your tuner, but a dyno run is a waste of time for now.

If your tuner can look at coolant and air temp, they should read the same before cold start.

Gary

fastd 01-20-2019 06:31 AM
Is just hard to start when it’s cold or does it do the same thing after it warms up?

PeteF 01-20-2019 09:34 AM
I seem to remember that hard starting could be an ignition coil going bad. Try swapping coil to see.

LG57 01-20-2019 10:26 AM
Also check for corrosion inside the distributor cap.

Steve Gallegos 01-21-2019 11:54 AM
The hard starting is the first start up. If I drive it, then stop let it sit for a couple of hours, it starts after 3 cranks. If I let it sit for the night, it starts all over again with the hard start. It drives ok on the freeway.

Steve Gallegos 01-24-2019 05:20 PM
Found my problem. reset the cold start settings. starts on third crank. Thanks for everyone help.

Gaz64 01-24-2019 05:26 PM
What does that mean "starts on 3rd crank"?

3rd starting attempt?

3 revolutions of the engine?

Gary

Steve Gallegos 01-24-2019 06:54 PM
3 revolutions of engine

Gaz64 01-24-2019 09:43 PM
That sounds good if you are happy now.

Gary


All times are GMT -7. The time now is 02:24 AM.

Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: