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82 Volvo 270 starting issues

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Rogerk86

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Hey guys. So I just bought a bayliner with Volvo 270 and it seems to run fine but just has some issues starting sometimes.
My question is since this engine does not have a manual or electric choke visible, what is the proper starting procedure? I noticed there is direct linkage from my throttles reverse, and the carburator. Is it supposed to be put in reverse to c!ose the throttle for start? Then back to neutral to start?
Never owned a boat like this so just looking for some insight. Thank you.
 
Which engine does this 1982 boat have in it?
The engine model number will begin with AQ!

The OHC 4 cylinder engines do not have a conventional cold start choke.
The V-8 engines do (or should) have a cold start coke.

Your throttle/shift unit should allow you to operate throttle only for engine start-up.

I am not aware of any need to shift into reverse and then back to neutral prior to start-up!


Pictures may be helpful.


.
 
DEpending on weather and how long since engine ran, I find it helps to cycle the throttle once or twice before attempting to start the engine... just like the old time pre fuel injection days in cars (pump the gas). Sometimes you need to have the throttle slightly opened when starting... its an "art". Regardless, engine should not crank unless you have it in neutral... and in "throttle only" mode. /
 
Thanks. Been having a blast in this 'ole beast' as my 10 yr. Son and I call her!
I noticed the the linkage II mentione does also work for forward. I'm pretty sure the engine is an AQ120 but not too sure because I haven't seen it on the engine, just compared some pics online I saw. Also had trouble loading pics. Where on the engine is it?
I'm leaning towards a fuel issue on the difficulty starting because it also hesitates when throttled, but cruises great. I noticed no fuel filter so was wondering where else would be a good place to start.
Thanks again!
 
When Bob mentions "pumping the throttle"...... he is suggesting that you operate the carburetor's accelerator pump by moving the throttle lever.
Each time the throttle lever changes the throttle shaft position from low speed to high speed, the accelerator pump delivers a squirt of fuel into the carburetor's throttle bore.
This enriches the fuel mixture as to counter an otherwise "flat spot" that is created when changing from the low speed metering circuits to the high speed metering circuits. (most every carburetor has this issue, whereas fuel injection does not)
When the engine is cold, a few pumps (as we call it) provides fuel enrichment for the cold start.
Just a few pumps as you will not want to flood the engine!

Rogerk86 said:
.........
I noticed the the linkage II mentione does also work for forward.
Please explain "linkage II" in more detail.


I'm pretty sure the engine is an AQ120 but not too sure because I haven't seen it on the engine, just compared some pics online I saw.
Go here, scroll down about 2/3, and see if you can determine which engine you have.
https://www.marinepartseurope.com/en/volvo-penta-schematics-MarineGasolineEngines.aspx

Also had trouble loading pics. Where on the engine is it?
I'm leaning towards a fuel issue on the difficulty starting because it also hesitates when throttled, but cruises great.
OK.... re-read my description of how the accelerator pump works and it's purpose.
Your's may be faulty.

I noticed no fuel filter so was wondering where else would be a good place to start.
I would install a Marine canister style primary fuel filter just after the anti-siphon valve and prior to the engine's fuel pump.
Click to expand...
 
Hey Rick and sandkicker I appreciate your insight on the issues starting they are a big help. Ive been enjoying the boat this summer despite the starting difficulties. After some trouble shooting it may be a small vacuum leak causing the starting issues and there was also a very small fuel leak at the diaphram pump so I purchased a rebuild kit for the carburetor and intake manifold gasket. It's a single barrel Solex carb on a AQ120. I will be putting it all back together tomorrow and was wondering the torque pattern and ft./lb. For the manifold bolts.
Take care out there.
 
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