I've just bought my first Blazer, its a UK spec 4x4 four door LS with a manula transmission and an LPG (Liquified Petroleum Gas) conversion so it can run on petrol (gas) or LPG (propane) As I'm not sure when it last had a service I want to give it a thorough going over, this may sort out a couple of issues, the main one of which is the car runs beautifully on gas, on LPG it runs fine at speed but when warm won't idle worth a crap, the revs fluctuate up and down and it occasionally stalls. rom what I've read LPG is harder to ignite than gas so it needs the ignition system to be tiptop plus slightly larger plug gaps. I'm hoping a good service may sort that out otherwise it'll have to go to a specialist to sort the LPG system out.

So I'm thinking the following:

Plugs, leads, cap, rotor arm, oil and filter change, air filter, fuel filter if there is one.

What brands of the above would you reccomend bearing in mind I can't just walk into an autozone or NAPA or a GM dealer here. Is there an uprated coil I could fit to give me a higher voltage/fatter spark as there is for small block HEI? Is the V6 dizzy HEI? To be honest not had a good look under the hood yet as I only collected it yesterday with a 400 mile drive home. Any reccomendations for uprated ignition components would be welcomed.

Have I missed anything off the list?

 

You'll never go wrong by using AC/Delco electrical parts on the truck. These engines are not picky about the oil, just any name brand of the correct viscosity rating will be fine. For filters (yes, the fuel filter is inside the frame rail on the driver's side) I like AC/Delco, Wix, or Purolator.
You should not need to change the coil or ignition system since the factory uses a high output form.

 

Well I'd like to meet the bloke that designed the location of the distributor and decided to fit the cap with two non captive screws one of which is sat under the heater pipes and a big chunk of the main wiring loom, idiot! What a performance to get the damn thing on and off, when you get your hands in you can't see anything, you really need three hands to do it but theres no room. Anyway, managed it in the end and I'm glad I did as I'd say they've never been changed since the truck left the factory as there was a barcode sticker across the cap and distributor body. The inside contacts were pretty furred up and the tip of the rotor was burnt and somewhat shorter than the new one. Its now idling really smoothly as its now had new plugs (also original, one breaking in half when I unscrewed it) leads, cap and rotor, air and oil filter and fresh oil. Just got to do the fuel filter which also seems to be in a stupidly inaccesible place and then give the brakes a good going over. I've also swapped the main window switch block as the drivers window switch was broken. I might also find time this week to get the tyres swapped for the General Grabber AT2's I have to go on. That should also tell me if the noise I have is just tyre noise or a knackered front wheel bearing. After that its gearbox, transfer box and diff oils.

All in all, getting there slowly, then I can start on the fun stuff like fitting my CB and antenna and fabricating a bar for my roof lights (4 x Hella FF75's) and mounts for my big Hella Jumbo 220's on the front bumper.