I finally received my manual and it says the Acty HA4, manual transmission warm idle should be at 1000 rpm +/- 50. for ATTACK models, it is 1150 +/- 50.
I was going to dig into the idle speed when I have time. I am curious : do you have to calculate RPM with a 3 cylinder? I'll admit I am being lazy here as I usually do research before asking a question.
Adam, do the timing belt job. It may seem to be labor intensive maintenance but it is well worth the trouble.
Chris, If you have a 6-cylinder tuneup tach, you set it for the six cylinder and divide the indicated rpm by two. A 3-cylinder does 3 sparks every two rpm, a 6-cylinder does 6 every two. Alternatively, you can get digital tuneup meters which use an inductive pickup on the No.1 spark plug wire, (really any spark plug wire wil work). They cost about $40 online, at either eBay or Amazon. Please go to your profile, click on your avatar and it will open your information page, and then add teh information on your truck to your signature. If your still stock, just add year and model. If your rig has mods please list them. Look at my signature as an example. It makes it a lot easier for folks to give you advice when you need it.
Okay- I dove into the timing belt job today, armed with youtube and the manual. All in all, no too bad, although getting the timing belt cover out after I had all of the bolts out was a pain... also, it seemed like the coolant hose on the bottom of the engine was keeping me from dropping the engine as much as the you tube video did. So, now I am in and three things: 1. i cant get the crank bolt to break loose - my homemade efforts keep bending and breaking the bolts that i am using in the pully to hold it. has anyone used any tools from autozone, etc. with success for holding the pully? 2. the belt looks really good. pics below. but there was no sticker, nothing to indicate how old it is. I have the new belt, i am thinking i should go ahead and replace it, regardless, right? 3. also- i was able to remove the upper cover without removing the valve cover- but i don think i will be able to put the belt cover back on without removing it. The problem is, after i removed all the bolts, the cover seems like it is glued on. I am afraid to pry with anything, because i don't want to damage the cover or the seal. any ideas?
I recently replaced mine and ended up getting the whole timing belt kit with the water pump, pulleys, and seals. Everything on your engine looks good but you don’t want to do this job again anytime soon, so just replace it all the first time. As for the crank bolt mine came out easily with an impact wrench, if you’re lucky enough to have one. The valve cover is going to be stuck, pry it off, just be careful not to scratch anything. I watched a YouTube channel called “morimoto garage” he has a 4 part series on replacing the timing belt. It’s all in Japanese but watch and learn, lots of helpful stuff.
@Minitruckin93 - that Morimoto Garage series is great! thanks for the reference. Now we just need to convince @shogun to do an english voice over for us !
never mind ---- it works a lot better with the truck in neutral. i will leave this up so that you all can make fun of me, and if someone else is as ignorant as i am, maybe it will save them the embarrassment. bought an impact wrench- bolt came right out. now i have another problem. When I try to turn the crank to line up the arrows, it doesn't want to stay in place. it wants to turn back. Any ideas? i dropped a video for reference.
Glad you figured it out. Did you notice the way Morimoto marked the timing belt? Mark the concave rib of the belt on the crank gear and convex rib on the cam gear. I was worried about getting one tooth off like the original posts video but if you mark it like morimoto and transfer to the new belt that’s much harder to do.
Adam, That's how we learn! We've all been there before, and we'll all be there again! Keep going Buddy! Limestone
This is a great thread. I just got my Acty last week and ordered the parts for the belt change. This will help me a lot.
This was my first ever timing belt change and this thread helped a bunch. I went slow to double check everything and did the belt marking trick. I can recommend having the service manual as well to have most of the recommended torque values. I also had pre ordered the left hand motor mount after seeing cracks in mine and I'm glad I did. It was toast.
how do you know if it has been done already? I am getting mine off the truck tomorrow it has 37k on it, is there a sticker somewhere when done like some old cars do or any way to know?
You can pop one of the covers off and look at the belt but most times you can’t 100% tell unless it’s really bad. But honestly in an interference engine I’d rather do it over again, Then to assume it was done and have it rip. The whole kit with waterpump cost me $180ish and 3 hours of my time. PS don’t think in miles(kilometers)think in years on the engine. It need to be done. Just bite the bullet. My old man used to say “ if you didn’t do it, it wasn’t done” when it came to automotive things.
That’s very true, it has 37k so I just don’t know how long it hasn’t been in use or sitting I plan to do the job just never know with these things. I plan to do plugs wires carb service timing etc etc plenty of help on this site love it
Ok there is a sticker I assume this may be a when it’s due? or is this something else entirely. not sure if this sticker is regarding the next time it should be done or something else entirely anyone know?
If you want to translate the sticker, take a picture of the sticker and upload the image into Google Translate. It works well and it's how I translated all the auction sheets (and a few inspection and maintenance stickers) during my search of the japanese market.