Need some advise
Thread Starter
Racer
Joined: Jul 2013
Posts: 423
Likes: 6
Need some advise
Last weekend My 78 was running fine , we had it out all weekend.. Monday it wouldn't start.. It turned over but would not start,, it was getting fuel but no spark.. First thing I thought of was the control module in the distributor,,so I replaced it and then it fired right up. I went for a short ride and noticed right away that it wasn't accerating good, and would backfire through the carb if I gave it to much gas,so I thought maybe the coil was bad from the module going bad,, changed that and the capacitor/condensor,cap and rotor too.. Still doesn,t run right. It starts good but boggs under load... Does anyone have any advise on this ?? It has a quadrajet carb on it,I'm wondering if something went wrong with it.. Sorry for the long post..
Drifting
Joined: Jan 2014
Posts: 1,866
Likes: 140
From: Sadieville Kentucky
Last weekend My 78 was running fine , we had it out all weekend.. Monday it wouldn't start.. It turned over but would not start,, it was getting fuel but no spark.. First thing I thought of was the control module in the distributor,,so I replaced it and then it fired right up. I went for a short ride and noticed right away that it wasn't accerating good, and would backfire through the carb if I gave it to much gas,so I thought maybe the coil was bad from the module going bad,, changed that and the capacitor/condensor,cap and rotor too.. Still doesn,t run right. It starts good but boggs under load... Does anyone have any advise on this ?? It has a quadrajet carb on it,I'm wondering if something went wrong with it.. Sorry for the long post..
with engine off look down carb and pump throttle you should see q fair amount of gas squirt out in both sides of carb.
Thread Starter
Racer
Joined: Jul 2013
Posts: 423
Likes: 6
It looks like it is getting gas on both sies of the carb.. When I drive it ,, it feels like it isn't getting enough when I accelerate.. Seems like the more gas i give it the more it feels that way..
Drifting
Joined: Jan 2014
Posts: 1,866
Likes: 140
From: Sadieville Kentucky
Drifting
Joined: Sep 2010
Posts: 1,412
Likes: 50
From: Laguna Niguel California
You don't say what carburetor you have. If it's the original type Q'jet, check the inlet fuel filter. Best to be safe and replace it anyway.
Sorry I didn't read carefully. OK, you have Q'jet. Yes, replace inlet filter.
Sorry I didn't read carefully. OK, you have Q'jet. Yes, replace inlet filter.
Thread Starter
Racer
Joined: Jul 2013
Posts: 423
Likes: 6
Wont be able to do that today but will do that, Thanks
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Drifting
Joined: Jan 2014
Posts: 1,866
Likes: 140
From: Sadieville Kentucky
It could I mentioned that a few reply's back .You can remove dist cap and (if you don't have a vacuum Pump) suck on the hose going to vac. advance and dist plate should move around counter clockwise
Thread Starter
Racer
Joined: Jul 2013
Posts: 423
Likes: 6
Thanks, I'll try that. I did pull the vac advance hose off with the motor running and the rpms dropped, Woukd that mean the vac advance is working ?
Burning Brakes
Joined: Oct 2008
Posts: 1,037
Likes: 14
From: Mobile Alabama
Ok - It was running fine then had no spark, so a new module fixed it. Now you have bogging.
I would not start digging into other things until I checked things associated with the last change – timing, coil, module, & firing order (if you removed any wires). The chance of two things breaking at the same time is kind of slim. I have also had new modules that were bad, and ran crappy, right out of the box –even Delco & Delphi brand, not just discount. The carb was running fine before, stick with ignition things first until you rule them out.
I would not start digging into other things until I checked things associated with the last change – timing, coil, module, & firing order (if you removed any wires). The chance of two things breaking at the same time is kind of slim. I have also had new modules that were bad, and ran crappy, right out of the box –even Delco & Delphi brand, not just discount. The carb was running fine before, stick with ignition things first until you rule them out.
Thread Starter
Racer
Joined: Jul 2013
Posts: 423
Likes: 6
Ok - It was running fine then had no spark, so a new module fixed it. Now you have bogging.
I would not start digging into other things until I checked things associated with the last change – timing, coil, module, & firing order (if you removed any wires). The chance of two things breaking at the same time is kind of slim. I have also had new modules that were bad, and ran crappy, right out of the box –even Delco & Delphi brand, not just discount. The carb was running fine before, stick with ignition things first until you rule them out.
I would not start digging into other things until I checked things associated with the last change – timing, coil, module, & firing order (if you removed any wires). The chance of two things breaking at the same time is kind of slim. I have also had new modules that were bad, and ran crappy, right out of the box –even Delco & Delphi brand, not just discount. The carb was running fine before, stick with ignition things first until you rule them out.
Thread Starter
Racer
Joined: Jul 2013
Posts: 423
Likes: 6
Does anyone know what thw black wire that I am pointing to is for, I noticed that it was backed almost all the way out of the alternator and the connector was loose and probably not making a good connection.. I tightened it up and went for a ride and it runs perfect...
Drifting
Joined: Jan 2014
Posts: 1,866
Likes: 140
From: Sadieville Kentucky
Ground wire