230GE Timing Data
Just joined and have a 230GE, can anyone supply the dwell angle and timing advance for the carb 230. I'm guessing the tickover should be 800 rpm.
Hi is this a 230e engine fitted with a carburettor? not the jetronic injection system ?? if so the engine probably came out of a car originally... therefore the tuning procedure is different.what problems are you having? rgds
Your threads are confusing, I am hedging that yours is a carburettor model, in which case you have a 230G not GE. The data I have has no engine code for 102.987 in the 230G, these were very rare in the UK, but my data is not exactly comphrensive. I show only 102.989 and 102.965 which is largely models intended for Italy.
Assuming your ignition timing and valve clearences are correct, to correct the idle speed will be achiecved by an adjusting screw coiled with a spring around it.
You will find this, at the lowest point in the carb., the screw acts as a stop to the throttle link. If you find the idle does not reduce or the engine 'hunts', you may have an air leak which will need rectifying.
You will need to readjust the carburettor by the mixture screw to get the emissions within tolerence. To do this you will need a Co gas anaylser.
Really a job for the garage.
Regards,
Thanks for that Pistonhead, I'm sorry my thread is confusing but I made the mistake of assuming it was a carb model before opening the bonnet and taking a look, I was suprised to find the jetronic fuel injection.
I understand an air leak could be causing the problem, but i'm happy to use a gas analyser if it saves the need for the garage, I just can't find the throttle adjustment screw in the first place, and unfortunately I've had no oppourtunity to open the bonnet for three weeks, I'll try tomorrow.
Now we can get some where, your idle adjusting screw will be situated in between the air filter and rocker cover. You will see about a 15mm to 20mm diameter panhead or slotted screw head.
Turning the screw clockwise will make your mixture lean or weak, turning the screw anticlockwise will richen the mixture. The Co reading you are looking to acheive is between 0.5% to 1.5%. The idle is 1%.
A trick to locate false air leaks, is using contrlolled squirts of brake cleaner spray near the inlet manifold and injectors. Do this carefully, the spray is FLAMABLE, DO NOT spray directly or near any electrical system.
You are conducting this test with the engine running, it is important to use short bursts of spray due to a Fire risk! What you will notice is a reduction of engine speed if an air leak is present. This will need remedying before proper running is to be achiecved. If there are leaks prsent, look at the rubber hoses which form part of the idle circuit. You may need to lift the air filter housing and check these hoses.
Thanks for the information, sadly I've still not lifted the bonnet, but I'm not doing a lot of mileage either. I will have a look for that screw though, I read something in the manual about a 3mm allen key, is that a later model?
The 3mm alley key is for fuel mixture adjustment, not idle.
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My Bad, it is the jetronic system, I'm only trying to adjust the idle speed and fix a slightly lumpy tickover.
It's the 102.987, I've been going through the manual online checking off one or two issues, but I can't work out where or how to adjust the idle, I've sorted the timing with a strobe, but it ticks over 1000 rpm and I'm in traffic a lot so I feel the clutch pulling and it makes the car rise and fall a lot on the gear change from R to 4.