well, I had theengine builder over about a week and a half ago. The egine was getting spark but there was no combustion what so ever. So we pulled some plugs and they were fuel soaked. He suggested once we get a nice day with very little moisture in the air to take all the plugs out and let the cylinders air out for a few our and install new plugs. Well i got the new plugs and gapped them to .050, since Davis unified ignition says I can gap them all the way to .055. Double checked the timing and put the mark on the balancer on the 12 degrees btdc and lined up the number one plug wire with the rotor. I is still doing the same thing firing a few cylinders adn then stops. It ran one time for like 10 seconds and when I walked up to it is stopped. I looked at the fuel pressure gauge right after it stopped and it was at 6 ps1(just wanted to make sure the fuel pressure was causing the engine to flood). Pulled a plug and it didn't smell like fuel which is good. Tomorrow I am going to pull are the HEI cap and make sure all the connections are corrosion free. Before I put the plugs in I checked each plug wireif it would firethe plug. It was in the afternoon, all I could see was a whitish blue line jump the gap in the plug. If there was no plug in the wire I could see the spark jump to the nearest metalsurface. So I would think I am getting enough voltage to the plugs. Still can't figure this thing out.
Engine won't idle
- Thread starter 88olds421
- Start date
- Status
I thought I could have had an issue with the coil and/or module but I really don't think that would be the case if the car runs so strong above 2000. Would a fuel selenoid in the nitrous system that could have fuel passing by and into the intake track cause it to cut off when trying to idle it down. I had a vacuum gauge on the carb when it was running at 2000 and it red 24 inches of vacuum.
Attachments
I finally got it running this weekend. It was the Distributor. I had borrowed one from a friends car and now it runs like a champ and idles well too. I want to thank everyone for their help and ideas
How old is your DUI distributor?. If your planning in sending it back for warranty work please let me know how that works out
I bought the DUI i think in like summer of 05 so i doubt it has any warranty, I was just going to get a coil and module for it and put it back in, I have thought about sending it back to them having them test everything and replace what needed to and get it recurved for the 421. THe engine does sound sweet. A little bit of a lope but not much to give away how much is actually sitting under the hood. I will try and get some pics up soon.
- Status
Similar threads
