Jump to content

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Shudders while cranking, not starting

jakevance99
 Share

Recommended Posts

jakevance99 Member

jakevance99

Posted
Posted

Hey guys, I just bought a 1999 Porsche Boxster about a month ago, and it has ran like a dream until today. Yesterday I detailed the heck out of it, put some oil treatment in it, fixed a headlight, and drove it around. It behaved totally normally, if not better than it normally does. I went out to start it this morning, and it just cranked and cranked. I gave it a little gas while cranking, and it started to catch like it was gonna start, but then I saw some white smoke. I took the engine cover off and was looking around. Everything seemed to be good from what I could see. I had a small oil leak, but I had already known about that. I cleaned out the air filter good, and topped off the oil. I kept cranking it for a couple seconds periodically just to see if I was making any progress. I had to go to work so I put the covers back on and tried to start it one more time. I noticed this time that as it cranked, the whole car kinda shook/shuddered. Im gathering that the lack of ignition could be a crank position sensor, or a fuel pump/ fuel fuse issue, but the rough cranking has me worried. there weren't  any metallic flakes in the oil, and it didn't sound like metal on metal grinding, it was just rough. any help or advice on it would be great, I'm new to owning a Porsche, and while I've worked on cars before, this Porsche is a new kind of beast. 

  • Moderators
JFP in PA Member

JFP in PA

Posted
  • Moderators
Posted

Welcome to RennTech :welcomeani:

 

Start with the basics:  Does the tachometer "bounce" while you are cranking it over?  If it doesn't , you may have a bad crank position sensor.  If it does bounce, check to see that you have both fuel pressure and delivery.  No fuel, no fire.................

jakevance99 Member

jakevance99

Posted
  • Author
Posted

I went home after work and cranked it for probably 5 seconds and it started right up. I’ve been driving it around for the whole evening without anything unusual happening. I’m gonna replace the fuel pump still, I’m pretty sure that was causing the trouble starting. I think the shuddering might have just been a low battery, I haven’t noticed it since. Thanks for the advice! I’ll definately use it if my plans to fix it fail 

jakevance99 Member

jakevance99

Posted
  • Author
Posted

No, I didn’t even touch the engine bay. It’s such a hassle to get to, I just tried to steer clear of the intake on the side, and the soft top as best as I could. Most of the work I did was on the interior 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.