HelloI have a LOT of unkind and unpleasant things to say about people who convert an EFI car to carb. However, I will skip them and simply tell you that you made a terrible error in judgement when you converted an EFI car to carb.
The EFI system has diagnostics built into it that with just a simple jumper wire you can find almost all the things that aren't working properly. When the codes dump out, you post the codes here on Stangnet I have 5.0 Foxbody code definitions that tell you where to look and what you need to do to fix the problems.
Since it is a carb car, it is time to beg, borrow or buy a vacuum gauge to troubleshoot the problem. Most auto parts stores will rent or load one if you have a credit card.
Vacuum Gauge readings
Pulling the carb right now. if I find nothing wrong I'm going to flip it like 92mustang74 said to see if the problem flips to the other cylinders. What should I be looking for if a side is clogged? I'll also go get some nicer plugs today. Thanks.1 side of your carb is clogged up.
Is this a new carb? Can you not see fuel squirt when you work the throttle linkage?Pulling the carb right now. if I find nothing wrong I'm going to flip it like 92mustang74 said to see if the problem flips to the other cylinders. What should I be looking for if a side is clogged? I'll also go get some nicer plugs today. Thanks.
Just pulled the carb. one side of the intake is dry while the other is wet. the dry side feeds all the bad cylinders. this is the problem. Thanks to all for your help! I will definitely find the problem with the carb here soon.Its a brand new carb and intake from summit. Ive seen fuel squirt into both primaries when I goose it. Could it not be getting enough air?
How could it be the intake? If you've verified that each spark plug has spark, and your distributor is installed correctly,it's your carb.Its a summit brand but really it's a holly. Just reversed the carb and ran it and the same cylinders weren't running. Thinking its intake.
This is logical but,How could it be the intake? If you've verified that each spark plug has spark, and your distributor is installed correctly,it's your carb.
We just got the good cylinders to fire with the carb off by spraying starting fluid straight into the intake. Bad ones still didn't fire. Carb is out of the question now. It has good compression (10:1) but still could be valves. The problem is definitely down to spark or valves not working correctly.This is logical but,
Could the intake have shipping material plugging it ?
I remember seeing a blower with plastic wrap still on bottom get installed.
maybe time for a compression test?