Engine, Drivetrain & Forced-Induction Have Technical Questions or Done Modifications to the G35? Find out the answer in here! (View All Posts)
Sponsored by:
Sponsored by: CARiD

HELP...Please.....Rough start up this morning

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jan 11, 2012 | 11:16 AM
  #1  
BigJohnson's Avatar
Thread Starter
|
Registered User
Joined: Nov 2011
Posts: 12
Likes: 3
HELP...Please.....Rough start up this morning

hey guys... this morning i went to warm up my car before leaving to work and the g sounded so rough (shaking real bad) firing up but after it was warm up it was fine again.. i have no clue whats going on and am a little worried as for this is my everyday driver... i think my throw out bearing is going out and will be replacing is soon.. could this be the cause of a rough start up?

any help would be much appreciated...
 
Reply
Old Jan 11, 2012 | 11:45 AM
  #2  
jarvo's Avatar
Registered User
iTrader: (3)
Joined: Feb 2011
Posts: 619
Likes: 53
From: 614
Check your oil

Possibly clogged injector

Did the CEL come on? If so what codes?

This happened to mine a few weeks ago when the oil was low. Pulled code P0021.
Had an oil change + code cleared and it hasn't happened since.
 
Reply
Old Jan 11, 2012 | 04:25 PM
  #3  
BigJohnson's Avatar
Thread Starter
|
Registered User
Joined: Nov 2011
Posts: 12
Likes: 3
will check oil asap! how do i check for a clogged injector?

by CEL you mean SES light? if so yes that light was one.. it has been popping up and going off every now and then(code p0300).. just did a ECU reset this morning and the SES went away.. what is a P0021 code btw?
 
Reply
Old Jan 11, 2012 | 04:35 PM
  #4  
onevoice's Avatar
Registered User
Joined: Feb 2009
Posts: 227
Likes: 10
P0300 - random misfire

Sounds like your engine is misfiring on cold start ups. This is usually caused due to clogged fuel injectors. You might want to try seafoam (fuel injector cleaner) or something to see if that makes a difference. You just pour it in your gas tank when you fill it up. This might make the car smoke a little for a few miles when it is burning all the gunk off. Also try to use premium gas for a while.

If this doesn't work then you might have to get them professional cleaned at a shop.

A cheap fix would be changing spark plugs but since it shakes when its cold, it sounds like a fuel injector more than worn out plugs. But its worth a try since you can do it on your own with just a couple of tools

Usually at start up (especially when its cold) your engine needs more fuel and it probably isnt getting it due to clogged injectors.
 
Reply
Old Jan 11, 2012 | 04:52 PM
  #5  
BigJohnson's Avatar
Thread Starter
|
Registered User
Joined: Nov 2011
Posts: 12
Likes: 3
thanks for the info "onevoice" i have done the seafoam not too long ago 3k i think.. plugs have been changed 15k ago.. i have seen a vid where a guy used "spray" seafoam in the TB.. might try that out..
 
Reply
Old Mar 2, 2012 | 03:47 AM
  #6  
jin22gt's Avatar
Registered User
iTrader: (2)
Joined: Jan 2007
Posts: 620
Likes: 8
update??
I have the code p0300 with the same problem..
It takes a while for the engine to turn on(5seconds) and the car shakes for 2second after
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
magnetism80
G35 Coupe V35 2003 - 07
5
Feb 1, 2019 10:00 AM
Jnm07
G35 Coupe V35 2003 - 07
10
Sep 5, 2015 01:16 AM
jbmw002
G35 Sedan V35 2003-06
2
Sep 3, 2015 08:42 PM
UT G35
General Tech Questions
6
Sep 3, 2015 03:58 PM
pdexta
Tuner & Dyno
0
Sep 2, 2015 01:03 PM



You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 10:09 PM.