My 300 problems are over
Thread Starter
|
Mountain Pass
Joined: May 2007
Posts: 223
Likes: 2
My 300 problems are over
My 85 1bbl was running like crap since I bought it. Always thought it had more power in it somewhere because I always hear about pulling stumps, I'd be lucky if I could have pulled a greasy string out of a cats ***. I rebuilt the 1bbl because I knew there was a lot of vacuum leaks. That made it run a tad better, but not a whole lot. So the only other question on my mind was timing. I turned the distributer until I got it to run as smooth as possible without sparknock.
Well, just posting this because I thought I'd let you guys know that buy a 300 and think its lacking, dont blame it on the motor. After the carb rebuild and timing I probably doubled the output of my motor, I have no idea how someone had the timing soo off. I was getting 11mpg before and I cant wait to figure out how much I get now. I was wondering how I'd even tow a small boat or anything up a small hill without stalling, but now I'm considering making an all day trip pulling a camper in a month.
Well, just posting this because I thought I'd let you guys know that buy a 300 and think its lacking, dont blame it on the motor. After the carb rebuild and timing I probably doubled the output of my motor, I have no idea how someone had the timing soo off. I was getting 11mpg before and I cant wait to figure out how much I get now. I was wondering how I'd even tow a small boat or anything up a small hill without stalling, but now I'm considering making an all day trip pulling a camper in a month.
Junior User
Joined: Jun 2007
Posts: 77
Likes: 0
Did the truck have a real rough idle before you re-did the timing? Mine rattles the whole truck at about 900 RPM idle and seems like it is lacking power. Although I have pulled a Mazda B3000 up a 45* incline, really wondered if it could do it. Curious as to whether your timing drasticaly aided in the power regain because it has been making me woner due to the idle and mileage being to horrible.
Zach
Zach
Postmaster
Joined: Mar 2005
Posts: 2,949
Likes: 6
From: Earth
How torn apart?
Check all the gaskets/hoses/connections on the intake side to ensure they're tight. Mine has a "hidden" elbow on the bottom side of the vacuum tree that drove me nuts until I felt it under there. Now you can barely tell it's running at idle, very smooth.
Check all the gaskets/hoses/connections on the intake side to ensure they're tight. Mine has a "hidden" elbow on the bottom side of the vacuum tree that drove me nuts until I felt it under there. Now you can barely tell it's running at idle, very smooth.
Thread Starter
|
Mountain Pass
Joined: May 2007
Posts: 223
Likes: 2
Best way to check for vacuum leaks in my opinion is with it running spray carb cleaner around the vacuum lines and on the outside of your carb. If the idle speeds up when you spray a spot then you got a leak there.
The timing made a huge difference. I thought it was the vacuum leaks all over but ended up being timing that helped the most, but I'd prob start with leaks.
The timing made a huge difference. I thought it was the vacuum leaks all over but ended up being timing that helped the most, but I'd prob start with leaks.
