Logo
FULL SITE MENU

VOLVO 250B 4cyl misfiring going through coils

D

dap

New member
"Hear is my problem and histor

"Hear is my problem and history:

Misfiring at moderate RPM (3000). Reduced to 2600 ran fine, then next day (heading home)run up to 2600 RPM started to sputter, I could hear exhaust change and feel the misfire I reuced RPM but it dropped to zero and engine would not restart. I checked plugs,wires ,pulled distributor dried out. I noticed coolant around the area and figured I had burped some and it got in the distributor. I had a spare so I changed the coil ( I noticed the old one was hotter than normal. It started right away but this time at 2000 RPM it started to sputter, I stopped there and let it run at 2000 RPM as I just wanted to get home. Now day 3, I looked again and noticed I have a snapped bolt on the tank side of the thermostat elbow and coolant behind the Distributor also dryed coolant going down the side of the engine. I am wondering if this could be the cause. Pissing coolant out at higher RPM, but why would this explain the apparent bad coil. I have not got it restarted since nor tried as I decided to install and electronic ignition and pull the tank to fix the leak and sheared bolt. Any suggestions or am I on the right rack."
 
"If the coil was hot (or e

"If the coil was hot (or extra warm) that points to a resistance problem, maybe in the distributer. I have the electronic ignition and have noticed how cool all the ignition components are since I changed."
 
"Dale,

On my boat an AQ151B

"Dale,

On my boat an AQ151B 4 cyl, it acts like that whenever the points need changing.

NAPA should carry them. Those electronic kits for that are probably pretty pricey. A set of points last me about a year. ( one season )

Plug wires will also get progressively worse as a motor heats up.

PS: My Volvo's coil always runs hot,it's mounted to the cast iron engine block"
 
"The electronic kits are not p

"The electronic kits are not pricey, the sell for around $100 and they won't give you the trouble you get with points. In an case, make sure you get a 3 ohm resistance coil with internal resistor."
 
"Dale,

If you just change t

"Dale,

If you just change the points make sure you change the condenser too,they go bad as well."
 
Back
Top