Pelican Parts Forums - Please Help

Pelican Parts Forums (http://forums.pelicanparts.com/)

- Porsche 911 Technical Forum (http://forums.pelicanparts.com/porsche-911-technical-forum/)

- - Please Help (http://forums.pelicanparts.com/porsche-911-technical-forum/274085-please-help.html)

Hello there guys, well Iam back with another ignorant question. So let me start by saying that Iam definitely not mechanically inclined therefore Iam in need of some technical help. And I know that I will get it here.....so here is my dilema.....

I have a 71 911 that has a 87 3.2 engine. Here is the problem..

Well, no start. When you turn the key there is power. You can hear the fuel pump and there is definitely fuel preasure. Also, the coil is hot. So when checked, there is spark. plugs are good but no spark...So I think the problem is isolated around the spark problem.

Well, what do you guys think?? What do I need to check first??

Thanks for any help....

rio:(

Quote:

So when checked, there is spark. plugs are good but no spark

????

ianc

Is the starter turning?

sorry, i mean no spark...yes the starter is turning.

all the fuses are good? and you wiggled each one?

is there voltage to the dist.?

Since it is an 87 3.2 engine, DME relay issue?

Dave

If you are saying that you DO have a strong spark at the distrubutor (dizzy) side of the coil wire, but no spark at the plugs, then the problem is between the end of the coil wire and the plugs which means, bad rotor, or fried dizzy cap, or the most unlikely event that all plug wires went bad at once.

Here's my ignition troubleshooting 101.

1. With insulated (thick rubber) gloves on, hold the dizzy side of the coil wire near some metal/ground (make sure there's no leaking fuel around, it's out of gear, and really use gloves unless you like 20000+ volts surging through your hand) and then have someone crank the engine a couple turns. Spark? If Yes, go to step 2.
(If no, replace coil wire and retest. If still no spark, then you have problems in the coil or upstream, which could be lots of things.)

2. If step 1 was Yes, then it's a dizzy or rotor prob, or the plug wires. Remove the dizzy cap and if the poles inside are burned and black, replace it.

3. If the rotor contacts (center and end) are burned and black, replace it.

4. If still no spark at the plugs, then prolly bad plug wires. I assume when you check for plug spark you are grounding the bottom electrode to grounded metal?