CB7Tuner Forums

Go Back   CB7Tuner Forums > Parts & Performance > Technical

Reply
 
Thread Tools Rate Thread Display Modes
Old 10-03-2017, 06:32 AM   #1
zedjr10
Gold Member
 
Join Date: Jan 2017
Location: Denver, Colorado
Posts: 353
zedjr10 is cool... so far.
Harder cold starts when sitting overnight. Possible Causes?

I got a 92 ex coupe and when it sits overnight and cold outside it becomes much harder to start. It idles fine and in warmer weather it starts up fine(2-3 cranks). I have a few things in mind that might be causing this but wanted to make a list of things. ECT sensor is one. What about cold air boost valve. Would this cause a slightly harder to start engine. O2 sensor i think has nothing to do with it. Right? What are other possibilities. Fuel filter and fuel pressure regulator have been changed recently. Fuel pump seal(i read that somewhere)? Poor manifold vacuum. Last time i checked it was at 17 hg in i believe.
zedjr10 is offline   Reply With Quote
Old 10-03-2017, 05:29 PM   #2
oni_cb7
CB7tuner Member
 
Join Date: Nov 2012
Location: Ca
Posts: 471
oni_cb7 is cool... so far.
Check your battery. It may be low on amps causing tough cold starts. Literally, just had this same issue recently.

Also, when you start the car, does it shoot out a lot of smoke? You could be leaking oil into the cylinders overnight. This can cause a rough cold start as well. Just pull your spark plugs and see if there is oil on them.
oni_cb7 is offline   Reply With Quote
Old 10-27-2017, 03:55 PM   #3
zedjr10
Gold Member
 
Join Date: Jan 2017
Location: Denver, Colorado
Posts: 353
zedjr10 is cool... so far.
Quote:
Originally Posted by oni_cb7 View Post
Check your battery. It may be low on amps causing tough cold starts. Literally, just had this same issue recently.

Also, when you start the car, does it shoot out a lot of smoke? You could be leaking oil into the cylinders overnight. This can cause a rough cold start as well. Just pull your spark plugs and see if there is oil on them.
It's not that even though i am going to need a battery soon cause it is getting cold in colorado.
zedjr10 is offline   Reply With Quote
Old 11-03-2017, 03:42 PM   #4
oni_cb7
CB7tuner Member
 
Join Date: Nov 2012
Location: Ca
Posts: 471
oni_cb7 is cool... so far.
Did you check for oil in the cylinders?
oni_cb7 is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 05:28 AM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.