94 Del Sol Vtec dhoc. Hard to start, random misses at idle, hesitation when opening throttle
Thanks for looking at my thread. This regards a 94 del sol.
When starting the car it will turn over freely (not even trying to start) for quite a while. After cranking for 40 seconds (10 seconds at a time or so to keep the starter from overheating) it will start. If you leave the car idle for a long time you can hear random misses. Sometimes after idling for 10 or so minutes it will stall.
If you open the throttle too quick (what you would see under everyday driving) the engine will stop producing power until you let up a little. Opening it slowly allows it to reach high rpm.
As the car got older the previous owner decided to do nothing but oil changes and gas. The spark plugs where so worn they had about .7 gap. The wires where original, etc..
So far I have replaced the plugs, wires, distributor (with coil), fuel filter and other random items. At first we thought it was a fuel pump issue we ruled this out. I have tested that each plug is getting spark and while idling and the diag wires jumped adjusted the timing.
Im at my wits end. Can you guys give me some direction?
(I work on subaru's regularly so Im not afraid to get dirty. Please give me the fully technical answer if possible)
Strange thing, I posted this before and the thread disapeared somehow. Here is a link to the original https://honda-tech.com/zerothread?id=1023473
When starting the car it will turn over freely (not even trying to start) for quite a while. After cranking for 40 seconds (10 seconds at a time or so to keep the starter from overheating) it will start. If you leave the car idle for a long time you can hear random misses. Sometimes after idling for 10 or so minutes it will stall.
If you open the throttle too quick (what you would see under everyday driving) the engine will stop producing power until you let up a little. Opening it slowly allows it to reach high rpm.
As the car got older the previous owner decided to do nothing but oil changes and gas. The spark plugs where so worn they had about .7 gap. The wires where original, etc..
So far I have replaced the plugs, wires, distributor (with coil), fuel filter and other random items. At first we thought it was a fuel pump issue we ruled this out. I have tested that each plug is getting spark and while idling and the diag wires jumped adjusted the timing.
Im at my wits end. Can you guys give me some direction?
(I work on subaru's regularly so Im not afraid to get dirty. Please give me the fully technical answer if possible)
Strange thing, I posted this before and the thread disapeared somehow. Here is a link to the original https://honda-tech.com/zerothread?id=1023473
check the timing sounds like the timing belt jumped a few teeth. happed to me after doign my swap. all you have to is check the marks to make sure everything lines up .
there will be a mark on the block and on the crank sproket and a up postition on the cam sproket. just make sure that at TDC everything is lined up. 75% chance this is your problem
there will be a mark on the block and on the crank sproket and a up postition on the cam sproket. just make sure that at TDC everything is lined up. 75% chance this is your problem
Thanks for the response. Ill remove the covers tonight and check it out. I remember 4 seperate marks on the crank, one by itself about an inch away from three right next to each other.
I assume the single one is TDC?
I assume the single one is TDC?
my immediate thoughts relate to cam timing problem as stated above,
but coudl also relate to TPS sensor setting. (do a search)
but coudl also relate to TPS sensor setting. (do a search)
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farfrumugen
Honda Civic / Del Sol (1992 - 2000)
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Honda Civic / Del Sol (1992 - 2000)
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