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Hard Starting in the Morning


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In the morning, I have been turning the key on twice and waiting for the fuel pump to prime the fuel system before starting the car. If I do not turn the car on twice, the car will just crank without starting. It will not even try to start. Any recommendations?

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Check the fuel pump relay

Also check for codes

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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I have checked for codes and I have no codes. I have been wondering if my fuel pump might be getting weak or if the injectors might be leaking (not holding pressure). Never thought about the fuel pump relay. I will check into that.

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I am definately going to check the fuel pressure regulator today. I have been doing some research and trying to locate the fuel pump relay to check it out. The car has 175,300 miles on it and I have been thinking that the fuel pump might be getting weak, so I checked the pump pressure and it was ok. I must say that I appreciate all the help and ideas. It's awsome...

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Are you aware of the higher pump pressure required to start the engine? You should get about 50-60 LBS. pressure before engine starts, then the pressure goes down to the running pressure. Check pressure before engine starts. If it is not high, you might need a fuel pump. (not a easy job to replace) But check the relay first, like was suggested.

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Put a fuel pressure gage on it also to see what happens when you turn the key on. It could be a flat spot on the fuel pump motor. You could put a volt meter on the fuel pump leads to see if you get power when the key is turned on.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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My 1996 Deville did this and it was the fuel pressure regulator. Easy fix

Typically a bad FPR will cause difficult hot starts; cold starts are usually OK since the extra fuel is not much of a detriment during a cold start.

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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