tritonofnor
Enthusiast
- Messages
- 7
Hi guys,
First post here, and a plea for help, sorry but it's driving me nuts...
Car is a 1988 1108cc 5 campus, marelli ignition system, transistor assisted points. Was running a bit rough when i got it a couple of months ago, so i have changed the following:
new air filter (sealed canister type - inlet hose on summer setting by grille)
new plug leads (8mm silicon type)
new plugs (NGK)
new dizzy cap
new rotor arm.
Car was initially cutting out at tickover speed, and jerky to accelerate under wide open throttle. Also a bit gutless when compared to my old Morris 1100..
Cutting out was cured by opening the points to the recommended 0.4mm. Now getting a problem with pinking. Running the car on super unleaded, using Castrol valvemaster plus whenever I remember to put it in! Tried setting the timing to book spec (vacuum disconnected) with 8 deg of advance, (which is for once clearly marked on the bell housing), no joy.
Been playing with the advance, moving it a degree or two at a time, ever since - car goes from being absolutely gutless, zero acceleration, barely able to maintain speed on a hill (too retarded) to pinking like mad (too advanced) without any sort of fine running inbetween. Vacuum advance is moving freely when i suck on the pipe. Tried spraying wd40 around inlet manifold, no obvious air leaks.
Tried using a gunson dwell meter to set the dwell angle, then read in Haynes that dwell reading is screwed by the transistor assistance unit. Put the timing light away tonight, and tried a method we used to use on minis - set tickover to 2000rpm, then advance ignition to max obtainable revs, back off about 250 rpm, nip up the dizzy. This always worked pretty well before, but ain't no good on my little Renault. I'm slowly going mad here, and need an injection of sanity - any and all suggestions gratefully received!!
First post here, and a plea for help, sorry but it's driving me nuts...
Car is a 1988 1108cc 5 campus, marelli ignition system, transistor assisted points. Was running a bit rough when i got it a couple of months ago, so i have changed the following:
new air filter (sealed canister type - inlet hose on summer setting by grille)
new plug leads (8mm silicon type)
new plugs (NGK)
new dizzy cap
new rotor arm.
Car was initially cutting out at tickover speed, and jerky to accelerate under wide open throttle. Also a bit gutless when compared to my old Morris 1100..
Cutting out was cured by opening the points to the recommended 0.4mm. Now getting a problem with pinking. Running the car on super unleaded, using Castrol valvemaster plus whenever I remember to put it in! Tried setting the timing to book spec (vacuum disconnected) with 8 deg of advance, (which is for once clearly marked on the bell housing), no joy.
Been playing with the advance, moving it a degree or two at a time, ever since - car goes from being absolutely gutless, zero acceleration, barely able to maintain speed on a hill (too retarded) to pinking like mad (too advanced) without any sort of fine running inbetween. Vacuum advance is moving freely when i suck on the pipe. Tried spraying wd40 around inlet manifold, no obvious air leaks.
Tried using a gunson dwell meter to set the dwell angle, then read in Haynes that dwell reading is screwed by the transistor assistance unit. Put the timing light away tonight, and tried a method we used to use on minis - set tickover to 2000rpm, then advance ignition to max obtainable revs, back off about 250 rpm, nip up the dizzy. This always worked pretty well before, but ain't no good on my little Renault. I'm slowly going mad here, and need an injection of sanity - any and all suggestions gratefully received!!