Question about Porsche 911

1 Answer

My Porsche won't start. I've changed all 12 spark plugs (it has twin plug heads), and am getting plenty of fuel into the cylinders (plugs came out wet), but still can't get it to fire. It has a Haltech ECU and individual throttle bodies. I've checked all the fuses and connections. What do you think I should try next?

Posted by on

  • daisymelwani Mar 06, 2009

    The porsche detailed above is a 1977 911.

  • daisymelwani Mar 24, 2009

    The car still won't start, it's an electrical problem but not sure where to begin - any ideas?



1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 4 Answers

Pull one plug out of one cylinder, and place the top of the spark plug on the body of the car(grounded). Start(or have someone turn the car over) and hold the plug to a grounded spot. If the plug sparks it is not an electrical problem. Also, if the plugs are coming out wet, your flooding the engine making start even harder. Also make sure the plugs are gapped to manufacturer's spec.

Posted on Mar 06, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

My truck got hot yesterday cause of a blown heater hose and it won,t start today , i,ve got fire and i can smell fuel , but it won,t start

The first question I would ask, Is it turning over? If not, pull the plugs, and see if there is water in the cylinders. Water won't compress. Second question, if it is turning over, pull a couple of plugs and see if you find any water. Because you may have blown a head gasket. If you have, make sure you send the head to get it checked for cracks before reassembly. Good luck!! DD

Jun 01, 2014 | 1996 Chevrolet S-10 Pickup

1 Answer

Let verify i have an 86 nissan 300zx. Fuel injected. I've changed the injectors. Distributer plugs. It runs fine until its hot then starts running real rough. Won't accelerate and puts out a lot of...

Check for compression on your cylinders. That would tell you if you have a bad head gasket or a bad head.check your distributer and see if is good, i seen that happend too

Mar 16, 2013 | Cars & Trucks

2 Answers

2000 dodge stratus wont start even after changing fuel pump

I think you are making some assumptions and may be overlooking the problem.
What is the actual fuel pressure at the rail ?
Are you getting a good spark at the plugs ?
Do you have normal compression on all cylinders ?
Is the check engine light on when you turn the key on ?

Feb 01, 2013 | Cars & Trucks

1 Answer

1984 camaro with v-6 won't start. it is getting fuel and has spark. turns over fine. had it running before it was bought.did'nt miss just :sluggish and lots of grey smoke. put fresh fuel in it...

Grey or white smoke indicates a blown head gasket or a cracked head. Pressurize the cooling system and remove the spark-plugs and check for signs of coolant inside the cylinders

Jul 19, 2011 | 1984 Chevrolet Camaro

1 Answer

On a 1998 dodge stratus 2.4 ltr engine misfire

check compression,with engine running remove h/t leads 1 at a time to diagnose weak cylinder,check that cylinder has the same amount of spark ( jumps the same gap as others )try changing the plug from crook cylinder to a good one and note if miss follows that spark plug or stays with same cylinder,can do same with injectors but only perform one procedure at a time so you can determine which one works.

May 15, 2010 | 1998 Dodge Stratus

1 Answer


Possible bad coil pack, since the plugs are not firing work you way back to the coil pack which is the 50k-70k volttage box that send the sparks through your wires to your plugs.

Jan 27, 2010 | BMW 535 Cars & Trucks

5 Answers

Hi, I have a 1997 Porsche 993. Motronic 5.2 M07. I am getting these fault codes 1) 62 misfire emissions-relvant 2) 51 Cylinder 2 misfire emissions-relevant) 3) 54 Cylinder 5 misfire ...

misfire :-------- try checking your 02 sensors /fuel pump and filter.

for 51 cylinder misfire :---
Change the coil. Period. Very easy to remove from the vehicle if it's a 4 cyl. Follow that spark plug wire from the spark plug to the other end. What it's attached to you should replace
for 54 cylinder 5 misfire :---First you have to eliminate the most obvious problems, like spark plug and spark plug wire. If you replace those and you still have a misfire, then it's a good idea to look for a vacuum leak in the intake manifold

Mar 07, 2009 | Porsche 911 Cars & Trucks

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

675 people viewed this question

Ask a Question

Usually answered in minutes!

Top Porsche Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22258 Answers


Level 3 Expert

911 Answers


Level 3 Expert

77169 Answers

Are you a Porsche Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides