|
Originally Posted by 87MirageIntruder
(Post 4771994)
My 2004 496HO had the older Cool Fuel 2 system, which didn't have the paint issue. The 2 system also has an adjustable fuel pressure regulator from the factory. It also does NOT use that internal filter the looks like a disc. Looks like you may have a Cool Fuel 2.
2003 Mag, rebuild to Mag HO. So there is nothing to do, like cleaning something or parts that can brake? |
Cleaning and flow testing the injectors is the main part. Can also clean the fuel rail and lines, screen on the reg (item 16)
|
Originally Posted by AllDodge
(Post 4772061)
Cleaning and flow testing the injectors is the main part. Can also clean the fuel rail and lines, screen on the reg (item 16)
Its the first picture of my cool fuel system. Gen II |
Yes Gen 2
|
Originally Posted by AllDodge
(Post 4772075)
Yes Gen 2
So if I understand you right, there is nothing ”bad” with the gen II cool Fuel system? |
Correct so far as the paint issue. For the most part its a stable system, and only issues which cause problems over time are; if clogging with the antisiphon valve regulator screen, but regular maintenance takes care of them normally.
Other issue as with all fuel injected systems id vapor lock on hot days. This can be fixed but requires rerouting fuel return line back to the tank. |
Make sure you run a pre pump 100 micron filter.
|
Is there someone that can tell me how to measure the resistance of the coils?
And what resistance should it be? Mercruiser 496 Mag Ho thanks https://cimg2.ibsrv.net/gimg/www.off...56657359f.jpeg https://cimg4.ibsrv.net/gimg/www.off...439fa49bb.jpeg |
When I measure between all of the coils I get these numbers on all of them.
Between +12v and ground = 29-31 Kohm Between +12v and sparkplug output = 10-11 Mohm |
Finding a ohm meter check is not real clear, but this is what I found
Step 3Use an ohmmeter to measure the primary resistance on the coil pack. Set the ohmmeter to 10 ohms. Place one lead on the center prong of the coil pack's electrical connector and the other lead on each of the spark plug terminals. The ohmmeter should read below 2 ohms. If the readings are above 2 ohms, have the coil pack replaced.Step 4Measure the secondary resistance on the coil pack. Set the ohmmeter to 20,000 ohms. Place both leads on each spark plug terminal. The ohmmeter should read between 6,000 to 30,000 ohms. If the readings are above 30,000 ohms or below 6,000 ohms, replace the coil pack.The full test procedure is listed here Be very careful when testing for spark. Do not remove plug wire while motor is running and only use a spark plug tester to check for spark https://easyautodiagnostics.com/gm/4...he-cop-coils-1 |
| All times are GMT -5. The time now is 08:35 AM. |
Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.